Parasitic mites hi-res stock photography and images - Page 6

Species of beetles icons set. Outline illustration of 9 species of beetles vector icons for web Stock Vector

RFHKEHRA–Species of beetles icons set. Outline illustration of 9 species of beetles vector icons for web

Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 ACAHINA PIGNOGONIDA. 495 Deg., Argas rej/tejcus, Latr., on Pigeons, occasionally on Man. A. Fisch. Notorious for its bite. Fam. Gamasidae. Beetle-mites. Chclicerre chelate. Pedipalpi five-jointed. The legs end with two claws and a sucker. Tracheae are present. Some of them lead a free life and are predacious, some are parasitic on Beetles and on the skin of Birds and Mammals. Gnmasvs coleoptratorvan L., Derinanyssvs av Stock Photo

RMRWWJPK–Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 ACAHINA PIGNOGONIDA. 495 Deg., Argas rej/tejcus, Latr., on Pigeons, occasionally on Man. A. Fisch. Notorious for its bite. Fam. Gamasidae. Beetle-mites. Chclicerre chelate. Pedipalpi five-jointed. The legs end with two claws and a sucker. Tracheae are present. Some of them lead a free life and are predacious, some are parasitic on Beetles and on the skin of Birds and Mammals. Gnmasvs coleoptratorvan L., Derinanyssvs av

Lime leaves affected Linden gall mite Eriophyes tiliae. High quality photo Stock Photo

RF2H03B8N–Lime leaves affected Linden gall mite Eriophyes tiliae. High quality photo

Camponotus japonicus on plant in the wild Stock Photo

RF2T6M2F2–Camponotus japonicus on plant in the wild

Seasonal weather, a tick in a garden, during Wednesday afternoon, Motala, Sweden. Stock Photo

RM2R468R4–Seasonal weather, a tick in a garden, during Wednesday afternoon, Motala, Sweden.

RMD796GB–Tick Ixodes Ricinus

Motala, Sweden. 9th, August, 2023. Close-up of a tick. Credit: Jeppe Gustafsson/Alamy Live News Stock Photo

RM2RGK1JX–Motala, Sweden. 9th, August, 2023. Close-up of a tick. Credit: Jeppe Gustafsson/Alamy Live News

Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . They are of very small size andare exclusively parasitic on plants of various kinds : many of themgive rise to pathological conditions resulting in scars, galls, or Pycnogonid(X 115 other excrescences of tlie stem or leaves, but a nuinhei of Table-casespecies are wandering forms, or live in the galls of other species. -^^- ^^• A drawing of one of these mites (Eriophi/cs silvicola), whichproduces galls on the leaves of the stone-bramble (Btibiis saxaiilis),i Stock Photo

RM2AKNDPM–Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . They are of very small size andare exclusively parasitic on plants of various kinds : many of themgive rise to pathological conditions resulting in scars, galls, or Pycnogonid(X 115 other excrescences of tlie stem or leaves, but a nuinhei of Table-casespecies are wandering forms, or live in the galls of other species. -^^- ^^• A drawing of one of these mites (Eriophi/cs silvicola), whichproduces galls on the leaves of the stone-bramble (Btibiis saxaiilis),i

. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS pockets, local destruction of the true skin or dermis takes place, and, according to some investigators, some mites now wander out of the hair follicles and may even enter the subcutaneous tissues. The numerous pustules run together and the skin becomes thickened and so seriously weakened from disease that it is highly susceptible to injury from rubbiug or contact with various objects. The odor is very unpleasant. There is little or no itching in this stage. The absorpt Stock Photo

RMPG1H20–. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS pockets, local destruction of the true skin or dermis takes place, and, according to some investigators, some mites now wander out of the hair follicles and may even enter the subcutaneous tissues. The numerous pustules run together and the skin becomes thickened and so seriously weakened from disease that it is highly susceptible to injury from rubbiug or contact with various objects. The odor is very unpleasant. There is little or no itching in this stage. The absorpt

Order coleoptera icons set. Outline illustration of 9 order coleoptera vector icons for web Stock Vector

RFHKEHRD–Order coleoptera icons set. Outline illustration of 9 order coleoptera vector icons for web

Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 ACAKINA—PYGNOGONIDA. 4'jr, Deg., Art/i/x r,'tff.riis, Latr., on Pigeons, occasionally on Man. A. jH- Fiseh. Notorious fur it> bite. Fain. Gamasidae. Beetle-mites. Chelicenu clielaU-. Pedipalpi five-jointed. The legs end with tvo claws and a sucker. Tracheae are present. Some of them lead a free life and are predacious, some are parasitic on Beetles and on the skin of Birds and Mammals. Gamasvs /rr>/>n L.. Di-rm>/////xKttx i/riiu/i. Dug., Pt erupt a* r/:tjii'i-t ilituiix Hcrm Stock Photo

RMRWWJPG–Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 ACAKINA—PYGNOGONIDA. 4'jr, Deg., Art/i/x r,'tff.riis, Latr., on Pigeons, occasionally on Man. A. jH- Fiseh. Notorious fur it> bite. Fain. Gamasidae. Beetle-mites. Chelicenu clielaU-. Pedipalpi five-jointed. The legs end with tvo claws and a sucker. Tracheae are present. Some of them lead a free life and are predacious, some are parasitic on Beetles and on the skin of Birds and Mammals. Gamasvs /rr>/>n L.. Di-rm>/////xKttx i/riiu/i. Dug., Pt erupt a* r/:tjii'i-t ilituiix Hcrm

RF2GAJ3K3–Lime leaves affected Linden gall mite Eriophyes tiliae. High quality photo

RF2T6M2G0–Camponotus japonicus on plant in the wild

RMD76GA0–Tick Ixodes Ricinus

RM2RGK1K1–Motala, Sweden. 9th, August, 2023. Close-up of a tick. Credit: Jeppe Gustafsson/Alamy Live News

$. [Scientific lectures]. es (^), often covered with several rows of fine teeth,and ending in three or four larger hooks, and a serrated labium{a). These parts form a beak, which the mite can insinuateinto the fiesh of its host, upon the blood of which many speciessubsist. While very many of the mites are parasitic on animals, somedevour eggs of insects. The Notherus (Fig. 35) destroys mil-lions of the eggs of the canker-worm, and it is said that it alsosucks the eggs of the chinch-bug. A few of this species are injurious toman, as the Sarcoptes, that burrows underthe skin of filthy people, cau Stock Photo$

RM2AG2X50–. [Scientific lectures]. es (^), often covered with several rows of fine teeth,and ending in three or four larger hooks, and a serrated labium{a). These parts form a beak, which the mite can insinuateinto the fiesh of its host, upon the blood of which many speciessubsist. While very many of the mites are parasitic on animals, somedevour eggs of insects. The Notherus (Fig. 35) destroys mil-lions of the eggs of the canker-worm, and it is said that it alsosucks the eggs of the chinch-bug. A few of this species are injurious toman, as the Sarcoptes, that burrows underthe skin of filthy people, cau

Seasonal weather, a tick in a garden, during Wednesday afternoon, Motala, Sweden. In the picture: A tick remover for cats. Stock Photo

RM2R468PF–Seasonal weather, a tick in a garden, during Wednesday afternoon, Motala, Sweden. In the picture: A tick remover for cats.

. The horse in health and disease : a text-book pertaining to veterinary science for agricultural students . Horses; Horses. PARASITES AND PARASITIC DISEASES 231 To destroy mange mites it is necessary to scrub the infested parts of the body with a warm coal-tar dip solution, or decoction made by boiling 1^ pounds of tobacco leaves in 8 quarts of water. The harness, currycombs, brushes, and other stable paraphernalia should also be thoroughly saturated with the solution to kill any mites which may have crawled onto them. Treatment ought to be repeated in a week or ten days, to destroy such youn Stock Photo

RMPG3K9R–. The horse in health and disease : a text-book pertaining to veterinary science for agricultural students . Horses; Horses. PARASITES AND PARASITIC DISEASES 231 To destroy mange mites it is necessary to scrub the infested parts of the body with a warm coal-tar dip solution, or decoction made by boiling 1^ pounds of tobacco leaves in 8 quarts of water. The harness, currycombs, brushes, and other stable paraphernalia should also be thoroughly saturated with the solution to kill any mites which may have crawled onto them. Treatment ought to be repeated in a week or ten days, to destroy such youn

Order coleoptera icons set. Flat illustration of 9 order coleoptera vector icons for web Stock Vector

RFHKEHNF–Order coleoptera icons set. Flat illustration of 9 order coleoptera vector icons for web

RF2GAJ3TB–Lime leaves affected Linden gall mite Eriophyes tiliae. High quality photo

RF2T6M2FC–Camponotus japonicus on plant in the wild

. [Scientific lectures]. Young Ixades albipictut. These parts form a beak which 22 Vermont Boakd of AGEicuLTUEtE. Fig. 9.. the mite can insinuate into the flesh of its host, upon the blood ofwhich many species subsist. While very many of the mites are parasitic on animals, some devoureggs of insects. The Ifotherus (Fig. 9) destroys millions of the eggsof the canker worm, and it is said that it also sucks the eggs of theChinch bug. A few of this species are injurious to man, asthe Sarcoptes, that burrows under the skin offilthy people, causing a disease once so common—the Itch. The cheese mites Stock Photo

RM2AG348H–. [Scientific lectures]. Young Ixades albipictut. These parts form a beak which 22 Vermont Boakd of AGEicuLTUEtE. Fig. 9.. the mite can insinuate into the flesh of its host, upon the blood ofwhich many species subsist. While very many of the mites are parasitic on animals, some devoureggs of insects. The Ifotherus (Fig. 9) destroys millions of the eggsof the canker worm, and it is said that it also sucks the eggs of theChinch bug. A few of this species are injurious to man, asthe Sarcoptes, that burrows under the skin offilthy people, causing a disease once so common—the Itch. The cheese mites

. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similarâhivelike or rashlike eruptions of the skin, in- tense itching Stock Photo

RMPG0K73–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similarâhivelike or rashlike eruptions of the skin, in- tense itching

Order coleoptera icons set. Simple illustration of 9 order coleoptera vector icons for web Stock Vector

RFHKEHPK–Order coleoptera icons set. Simple illustration of 9 order coleoptera vector icons for web

RF2T6M2F8–Camponotus japonicus on plant in the wild

. Bulletin. the genus Uropoda. All of themites we have collected on May-beetles are in the nymphal migratorystages, in which they attach themselves to the beetles as a means of car- 103 riage, and are probably neither parasitic nor predaceous. When asuitable breeding ground is reached the mites drop and transform, andbegin to feed on bacterial and fungous growths. Parasites of the beetle Oetalid Flies(Pyegota undata Wied. and P. valida Harris) Our earliest record of P. undata as a parasite of Phyllophaga aduUswas made by Prof. F. M. Webster, who reared it in the spring of 1S91from beetles coll Stock Photo

RM2AFKBTB–. Bulletin. the genus Uropoda. All of themites we have collected on May-beetles are in the nymphal migratorystages, in which they attach themselves to the beetles as a means of car- 103 riage, and are probably neither parasitic nor predaceous. When asuitable breeding ground is reached the mites drop and transform, andbegin to feed on bacterial and fungous growths. Parasites of the beetle Oetalid Flies(Pyegota undata Wied. and P. valida Harris) Our earliest record of P. undata as a parasite of Phyllophaga aduUswas made by Prof. F. M. Webster, who reared it in the spring of 1S91from beetles coll

. A manual of zoology. Zoology. II. ACERATA: LINGUATULIDA 397 into a sucking beak. This consists of a tube formed by the basal joints of the pedipalpi, in which the chehcerx, either chelate, clawed, or stylet-like, play Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and trache£e are lacking. The larva as it escapes from the egg lacks the last pair of legs and then closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites (Trombidiid.-e) and water mites, HYDRACHNlDa; (Hydraclma* Atax'^'), are f Stock Photo

RMPG3P11–. A manual of zoology. Zoology. II. ACERATA: LINGUATULIDA 397 into a sucking beak. This consists of a tube formed by the basal joints of the pedipalpi, in which the chehcerx, either chelate, clawed, or stylet-like, play Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and trache£e are lacking. The larva as it escapes from the egg lacks the last pair of legs and then closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites (Trombidiid.-e) and water mites, HYDRACHNlDa; (Hydraclma* Atax'^'), are f

Insects beetles icons set. Simple illustration of 9 insects beetles vector icons for web Stock Vector

RFHKEHPN–Insects beetles icons set. Simple illustration of 9 insects beetles vector icons for web

RF2T6M2FD–Camponotus japonicus on plant in the wild

Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . ntegu-ment is thickly and continuously chitinized, and shows no sign ofsegmentation. This sub-order contains the single family Oribatidae, sometimesknown as beetle-mites, on account of their hard, black, shinyintegument. They are not parasitic, but live in moss, under stones,etc., in damp places. An enlarged drawing of an Oril:)atid mite {Notasjyis hicolor) ison view in Table-case 25. Sub-order III.—METASTIGMATA. Acari with the tracheae opening by a pair of Stock Photo

RM2AKNEP6–Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . ntegu-ment is thickly and continuously chitinized, and shows no sign ofsegmentation. This sub-order contains the single family Oribatidae, sometimesknown as beetle-mites, on account of their hard, black, shinyintegument. They are not parasitic, but live in moss, under stones,etc., in damp places. An enlarged drawing of an Oril:)atid mite {Notasjyis hicolor) ison view in Table-case 25. Sub-order III.—METASTIGMATA. Acari with the tracheae opening by a pair of

. Fresh-water biology. Freshwater biology. Fig. 13 21. Figures showing the ventral surface of the body of the nymphs of several genera ol water-mites. (Appendages are similar to those of the adult and not shown here; compare with figures of adults on succeeding pages.) a, Arrhenurus; b, Limnesia; c, Sperchon; d, Hygrobales; e, Fiona; /, Leberlia. (Modified from Piersig.) •distinguish the adult. During this nymph stage the mite is not usually parasitic except in the case of the mussel parasites. How- ever, Unionicola crassipes has been found by Soar, in all stages, in the fresh-water sponge, an Stock Photo

RMPFYPCY–. Fresh-water biology. Freshwater biology. Fig. 13 21. Figures showing the ventral surface of the body of the nymphs of several genera ol water-mites. (Appendages are similar to those of the adult and not shown here; compare with figures of adults on succeeding pages.) a, Arrhenurus; b, Limnesia; c, Sperchon; d, Hygrobales; e, Fiona; /, Leberlia. (Modified from Piersig.) •distinguish the adult. During this nymph stage the mite is not usually parasitic except in the case of the mussel parasites. How- ever, Unionicola crassipes has been found by Soar, in all stages, in the fresh-water sponge, an

RF2T6M2EY–Camponotus japonicus on plant in the wild

The house-fly, Musca domestica Linn: its structure, habits, development, relation to disease and control . esswarm on flies emerging from rubbish heaps. Banks holds theopinion that they are not parasitic, but that the insect is onlyused as a means of transportation. It is difficult to decide whetherthis is so in all cases. I have illustrated (fig. 71) a specimen of MITES BORNE BY MUSCID FLIES 157 the Lesser House-fly, F. canicularis, caught in a romu; on theunderside of thi flys abdonuii a number of immature Gamasidsare attached, apparently by th<ir stomal regions. Mr Micliafl, towhom I sub Stock Photo

RM2AWK5RG–The house-fly, Musca domestica Linn: its structure, habits, development, relation to disease and control . esswarm on flies emerging from rubbish heaps. Banks holds theopinion that they are not parasitic, but that the insect is onlyused as a means of transportation. It is difficult to decide whetherthis is so in all cases. I have illustrated (fig. 71) a specimen of MITES BORNE BY MUSCID FLIES 157 the Lesser House-fly, F. canicularis, caught in a romu; on theunderside of thi flys abdonuii a number of immature Gamasidsare attached, apparently by th<ir stomal regions. Mr Micliafl, towhom I sub

. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 160 ASCOMYCETES. * Witches' brooms on birch are very common in Scotland. They appear as tangled masses of twigs, which at first sight give the impression of some bird's nest. I have frequently examined the leaves borne on these brooms, and have never failed to find the asci of an Uxoascus. Sadebeck gives in his monograph the two above-named species as found on birches bearing v.atches' brooms. Mites (e.g. Phytoptus) Stock Photo

RMPG42R1–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 160 ASCOMYCETES. * Witches' brooms on birch are very common in Scotland. They appear as tangled masses of twigs, which at first sight give the impression of some bird's nest. I have frequently examined the leaves borne on these brooms, and have never failed to find the asci of an Uxoascus. Sadebeck gives in his monograph the two above-named species as found on birches bearing v.atches' brooms. Mites (e.g. Phytoptus)

RF2T6M2FW–Camponotus japonicus on plant in the wild

The Farm-poultry . e chickens head. Also use it for ScalyFill Shanks—a parasitic trouble—and as a preventive for Gapes. 10c and 25c perOut this bos prepaid. COUPON Use the Liquid for Mites and Spider Lice in hen houses. Paint it on theand Mail it nests, roosts and into every crack and crevice of the house. 1 qt. 35c; 2to us today qts. 60c; 4 qts. $1.00. O. K. Stock-Food x» These three standard preparations will rid your poultry of lice andCo. 524Monon£idg. * by frequent use will prevent their return. An ounce of preventionChicago is worth a ton of cure in the poultry business. Plea Stock Photo

RM2AJ4RBA–The Farm-poultry . e chickens head. Also use it for ScalyFill Shanks—a parasitic trouble—and as a preventive for Gapes. 10c and 25c perOut this bos prepaid. COUPON Use the Liquid for Mites and Spider Lice in hen houses. Paint it on theand Mail it nests, roosts and into every crack and crevice of the house. 1 qt. 35c; 2to us today qts. 60c; 4 qts. $1.00. O. K. Stock-Food x» These three standard preparations will rid your poultry of lice andCo. 524Monon£idg. * by frequent use will prevent their return. An ounce of preventionChicago is worth a ton of cure in the poultry business. Plea

. A text-book of agricultural zoology. Zoology, Economic. ACARINA OK MITES. 117 species in her Report for 1897â^ namely, Oribata lapidaria, â which has a similar life-history. These mites must not be. Fio. 47.âBeetle Mite (OHbala orbieuMria). A, Adult; B, immature form following the six-legged larval stage; c, pseudo-stig- matic organ; Ai, ungues (claws) of adult; Bi, ungues of B. confused with the mites that are parasitic upon beetles and the BdellidcB or Snout Mites that we find on other insects. Family Phytoptidse or Gall Mites are minute mites which live in the buds (Phyioptus ribis, avell Stock Photo

RMPG3PAJ–. A text-book of agricultural zoology. Zoology, Economic. ACARINA OK MITES. 117 species in her Report for 1897â^ namely, Oribata lapidaria, â which has a similar life-history. These mites must not be. Fio. 47.âBeetle Mite (OHbala orbieuMria). A, Adult; B, immature form following the six-legged larval stage; c, pseudo-stig- matic organ; Ai, ungues (claws) of adult; Bi, ungues of B. confused with the mites that are parasitic upon beetles and the BdellidcB or Snout Mites that we find on other insects. Family Phytoptidse or Gall Mites are minute mites which live in the buds (Phyioptus ribis, avell

$. An address upon farm pests, including insects, Fungi, and animalcules . es (^), often covered with several rows of fine teeth,and ending in three or four larger hooks, and a serrated labium{a). These parts form a beak, which the mite can insinuateinto the flesh of its host, upon the blood of which many speciessubsist. While very many of the mites are parasitic on animals, somedevour eggs of insects. The Notherus (Fig. 35) destroys mil-lions of the eggs of the canker-worm, and it is said that it alsosucks the eggs of the chinch-bug. A few of this species are injurious toman, as the Sarcoptes, Stock Photo$

RM2CE5Y45–. An address upon farm pests, including insects, Fungi, and animalcules . es (^), often covered with several rows of fine teeth,and ending in three or four larger hooks, and a serrated labium{a). These parts form a beak, which the mite can insinuateinto the flesh of its host, upon the blood of which many speciessubsist. While very many of the mites are parasitic on animals, somedevour eggs of insects. The Notherus (Fig. 35) destroys mil-lions of the eggs of the canker-worm, and it is said that it alsosucks the eggs of the chinch-bug. A few of this species are injurious toman, as the Sarcoptes,

. Insects . ambycidae, and Buprestidae. By J. M. Swaine.Carabida; and Silphida?. By H. C.Tall. ^ . ^ CoccaneUida^, Elateridse, ChrysomeUdsp, and Rhynchophora (excluding Ipidse).By C. W. Leng. Dystiscida;. By J. T). Sherman, Jr (Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee .,. (Ismed July 11, 1919). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). ^--By Alex. D. MacGiUivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt (Issued November 8, 1919).. PartH: SPIDERS, MITES, AND ^lYRIAPODS.Spide Stock Photo

RM2CDJPGA–. Insects . ambycidae, and Buprestidae. By J. M. Swaine.Carabida; and Silphida?. By H. C.Tall. ^ . ^ CoccaneUida^, Elateridse, ChrysomeUdsp, and Rhynchophora (excluding Ipidse).By C. W. Leng. Dystiscida;. By J. T). Sherman, Jr (Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee .,. (Ismed July 11, 1919). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). ^--By Alex. D. MacGiUivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt (Issued November 8, 1919).. PartH: SPIDERS, MITES, AND ^lYRIAPODS.Spide

. Insects . By H. C. Fall. Coccinellidse, Elateridse, Chrysomehdse, and Rhynchophora (excluding Ipida)). By. C. W. Leng.Dytiscidse. By J. D. Sherman, Jr.. {Issued December 12,1919) Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1910). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November S, 1919). Part H: SPIDERS, MITES, AND MYRIAPODS.Spiders. By J. H. Emerton.Mites. By Nathan Banks.Myriapods. By Ralph V. ChambtTliii { Stock Photo

RM2CDJF4K–. Insects . By H. C. Fall. Coccinellidse, Elateridse, Chrysomehdse, and Rhynchophora (excluding Ipida)). By. C. W. Leng.Dytiscidse. By J. D. Sherman, Jr.. {Issued December 12,1919) Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1910). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November S, 1919). Part H: SPIDERS, MITES, AND MYRIAPODS.Spiders. By J. H. Emerton.Mites. By Nathan Banks.Myriapods. By Ralph V. ChambtTliii {

$. Insects . cluding Ipidse, Cerambycidse, and Buprestidae. By J. M. Swaine.Carabidse and Silphidse. By H. C. Fal|. Coccinellidse, Elateridse, Chrysomelidae, and Rhynchophora (excluding Ipidae).By C. W. Leng. ^1 Dystiscidae. By J. D. Sherman, Jr {Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1919). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November S, 1919). PartH: SPIDERS, MITES, AND MYRI Stock Photo$

RM2CDJJPP–. Insects . cluding Ipidse, Cerambycidse, and Buprestidae. By J. M. Swaine.Carabidse and Silphidse. By H. C. Fal|. Coccinellidse, Elateridse, Chrysomelidae, and Rhynchophora (excluding Ipidae).By C. W. Leng. ^1 Dystiscidae. By J. D. Sherman, Jr {Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1919). Part G: HYMENOPTERA AND PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November S, 1919). PartH: SPIDERS, MITES, AND MYRI

$. Insects . and Buprestidse. By J. M. Swaine. Carabidse and Silphidfe. By H. C. Fall. CoccineUidse, Elateridse, Chrysomelidae, and Rhynchophora (excluding Ipidse). By C. W. Leng.Dytiscidse. By J. D. Sherman, Jr {Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1919). Part G: HYMENOPTERA AI^D PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November 3, 1919). Part H: SPIDERS, MITES, AND MYRIAPODS.Spiders. By J. H. Emerton. Stock Photo$

RM2CDJF91–. Insects . and Buprestidse. By J. M. Swaine. Carabidse and Silphidfe. By H. C. Fall. CoccineUidse, Elateridse, Chrysomelidae, and Rhynchophora (excluding Ipidse). By C. W. Leng.Dytiscidse. By J. D. Sherman, Jr {Issued December 12, 1919). Part F: HEMIPTERA. By Edward P. Van Duzee {Issued July 11, 1919). Part G: HYMENOPTERA AI^D PLANT GALLS. Sawflies. (Tenthredinoidea). By Alex. D. MacGillivray. Parasitic Hymenoptera. By Charles T. Brues. Wasps and Bees. By F. W. L. Sladen. Plant Galls. By E. Porter Felt {Issued November 3, 1919). Part H: SPIDERS, MITES, AND MYRIAPODS.Spiders. By J. H. Emerton.

. Elements of Comparative Anatomy. 266 COlklPAEATIVE ANATOMY. an elevation of the cepHalotliorax. In tlie Pycnogonida 4 eyes occupy a similar position. On tlie other hand they are reduced to 2 in many Mites, and so also in the Tardigrada; in many parasitic Mites they have completely disappeared. The principal point in their structure is the presence of a cornea-lens, which is ordinarily very large in each, eye; behind this is a layer of cells, which represents the vitreous body, and to this the retina is attached. In the Aranea the retina is formed in two ways, the eyes directed anteriorly dif Stock Photo

RMRCPA72–. Elements of Comparative Anatomy. 266 COlklPAEATIVE ANATOMY. an elevation of the cepHalotliorax. In tlie Pycnogonida 4 eyes occupy a similar position. On tlie other hand they are reduced to 2 in many Mites, and so also in the Tardigrada; in many parasitic Mites they have completely disappeared. The principal point in their structure is the presence of a cornea-lens, which is ordinarily very large in each, eye; behind this is a layer of cells, which represents the vitreous body, and to this the retina is attached. In the Aranea the retina is formed in two ways, the eyes directed anteriorly dif

. Elements of comparative anatomy. Anatomy, Comparative. 266 COMPARATIVE ANATOMY. an elevation of the cephalothorax. In the Pycnogonida 4 eyes occupy a similar position. On the other hand they are reduced to 2 in many Mites, and so also in the Tardigrada; in many parasitic Mites they have completely disappeared. The principal point in their structure is the presence of a cornea-lens, which is ordinarily very large in each eye ; behind this is a layer of cells, which represents the vitreous body, and to this the retina is attached. In the Aranea the retina is formed in two ways, the eyes direct Stock Photo

RMRCPW55–. Elements of comparative anatomy. Anatomy, Comparative. 266 COMPARATIVE ANATOMY. an elevation of the cephalothorax. In the Pycnogonida 4 eyes occupy a similar position. On the other hand they are reduced to 2 in many Mites, and so also in the Tardigrada; in many parasitic Mites they have completely disappeared. The principal point in their structure is the presence of a cornea-lens, which is ordinarily very large in each eye ; behind this is a layer of cells, which represents the vitreous body, and to this the retina is attached. In the Aranea the retina is formed in two ways, the eyes direct

. Animal parasites and human disease. Insects as carriers of disease; Medical parasitology. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms (Fig. 146A) Stock Photo

RMRN529W–. Animal parasites and human disease. Insects as carriers of disease; Medical parasitology. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms (Fig. 146A)

. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. AIIACHN1DA. 203. claw, as in the spiders, at least the females, for in the males this palp is frequently the seat of a singular apparatus (e), hereafter to be described. Thirdly, of a sternal labiurn (f), which, as its name implies, is inserted into the sternum, and does not give origin to any arti- culated appendage or palp. With respect to the composition of the mouth in the parasitic species, such as most of the mites, and we may take as an example an argas, although it is concealed under the form of a beak, sometimes Stock Photo

RMRD65FD–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. AIIACHN1DA. 203. claw, as in the spiders, at least the females, for in the males this palp is frequently the seat of a singular apparatus (e), hereafter to be described. Thirdly, of a sternal labiurn (f), which, as its name implies, is inserted into the sternum, and does not give origin to any arti- culated appendage or palp. With respect to the composition of the mouth in the parasitic species, such as most of the mites, and we may take as an example an argas, although it is concealed under the form of a beak, sometimes

. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. claw, as in the spiders, at least the females, for in the males this palp is frequently the seat of a singular apparatus (e), hereafter to be described. Thirdly, of a sternal labiurn (f), which, as its name implies, is inserted into the sternum, and does not give origin to any arti- culated appendage or palp. With respect to the composition of the mouth in the parasitic species, such as most of the mites, and we may take as an example an argas, although it is concealed under the form of a beak, sometimes with a sharp poi Stock Photo

RMRD65F8–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. claw, as in the spiders, at least the females, for in the males this palp is frequently the seat of a singular apparatus (e), hereafter to be described. Thirdly, of a sternal labiurn (f), which, as its name implies, is inserted into the sternum, and does not give origin to any arti- culated appendage or palp. With respect to the composition of the mouth in the parasitic species, such as most of the mites, and we may take as an example an argas, although it is concealed under the form of a beak, sometimes with a sharp poi

. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms (Fig. 146A) Stock Photo

RMRD9JYT–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms (Fig. 146A)

. The Canadian field-naturalist. Natural history. lOO The Ottawa Naturalist. [August forms and habits, renders them peculiarly interesting. They be- long-, it is hardly necessary to point out, to the class Arachnoidea, which embraces the spiders, mites and scorpions, and includes, amongst other orders, the Araneina or true spiders, the Acarina or mites, the Poecilopoda or King-crabs, in the opinion of some eminent zoologists, and other interesting groups. To the Acarina belong the cheese-mites (TyroglyphusJ, the parasitic skin-mites (DesmodexJ, and others which are destitute of tracheae, or sp Stock Photo

RMRG2YY2–. The Canadian field-naturalist. Natural history. lOO The Ottawa Naturalist. [August forms and habits, renders them peculiarly interesting. They be- long-, it is hardly necessary to point out, to the class Arachnoidea, which embraces the spiders, mites and scorpions, and includes, amongst other orders, the Araneina or true spiders, the Acarina or mites, the Poecilopoda or King-crabs, in the opinion of some eminent zoologists, and other interesting groups. To the Acarina belong the cheese-mites (TyroglyphusJ, the parasitic skin-mites (DesmodexJ, and others which are destitute of tracheae, or sp

RMRN42G6–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms (Fig. 146A)

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified Stock Photo

RMRN43DF–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified

. The biology of spiders. Spiders; Insects. 342 THE BIOLOGY OF SPIDERS of all the mites, having a very rich and varied colouring. They also exhibit a great diversity of shape. Their legs are provided with long hairs and by their means the water- mites swim rapidly. They are predaceous, and their young stages are often parasitic upon other aquatic animals. They form a large group, with about two hundred and fifty species in Great Britain. The Ixodoidea or Ticks are the largest of the mites. They are all parasites, which suck the blood of their hosts and thereby become enormously distended. When Stock Photo

RMRHK34D–. The biology of spiders. Spiders; Insects. 342 THE BIOLOGY OF SPIDERS of all the mites, having a very rich and varied colouring. They also exhibit a great diversity of shape. Their legs are provided with long hairs and by their means the water- mites swim rapidly. They are predaceous, and their young stages are often parasitic upon other aquatic animals. They form a large group, with about two hundred and fifty species in Great Britain. The Ixodoidea or Ticks are the largest of the mites. They are all parasites, which suck the blood of their hosts and thereby become enormously distended. When

. Animal parasites and human disease. Parasites; Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms Stock Photo

RMRN43AK–. Animal parasites and human disease. Parasites; Medical parasitology; Insects as carriers of disease. 348 THE MITES Demodex infection, but it is probable that sulphur applications in some form would reach and destroy them. Tongue-worms Related to the mites, but now placed in a distinct order, Lin- guatulina, are the tongue-worms. These animals have become so modified by parasitic life that the adults have lost nearly all re- semblance to the other members of their group, and have become so wormlike, both in form and life history, as to have been classified by older writers with the tapeworms

. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE MITES 105 When groomed with the brush or currycomb it will manifest its pleasure by protrusion and movements of the upper lip, at the same time leaning toward the brush. This action is not peculiar to mange, however, as it may be observed in any itching skin affection of the horse. The pruritus seems to be greater at night and is always intensified by an increase in the warmth of the body, as by a warm stable or Stock Photo

RMRE1BNX–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE MITES 105 When groomed with the brush or currycomb it will manifest its pleasure by protrusion and movements of the upper lip, at the same time leaning toward the brush. This action is not peculiar to mange, however, as it may be observed in any itching skin affection of the horse. The pruritus seems to be greater at night and is always intensified by an increase in the warmth of the body, as by a warm stable or

. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 245 diseases, is an important preventive measure. Infected animals should be completely isolated from the herd, and kept apart from other animals until after they have been treated. Hogs that are slightly infected should be quarantined and treated. If badly affected, they should be killed, and the carcass disposed of by burning or burvina'.. Fig. 69.—A severe case of mange. Tlic different remedies used in the treatment of the disease may be applied by dipping, hand dressing or washing, pouring, smearing and spo Stock Photo

RMREFM3H–. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 245 diseases, is an important preventive measure. Infected animals should be completely isolated from the herd, and kept apart from other animals until after they have been treated. Hogs that are slightly infected should be quarantined and treated. If badly affected, they should be killed, and the carcass disposed of by burning or burvina'.. Fig. 69.—A severe case of mange. Tlic different remedies used in the treatment of the disease may be applied by dipping, hand dressing or washing, pouring, smearing and spo

RMRE1BN9–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE MITES 111 will be influenced by age, condition, character of fleece, and the con- ditions under which the sheep are kept. Animals debilitated from age,. Fig. 68.—Psoroptes communis var. ovis, female; dorsal (left) and ventral (right) surface. or other cause, offer little resistance, while lambs, due to the tenderness of their skin and their dense fleece, are apt to be attacked more severely. Sheep with a close wo

RMRE1BPB–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. 98 PARASITES OF THE DOMESTIC ANIMALS Family I. Gamasid^ Acarina (p. 94).—The gamasid mites. The mouth parts are ar- ranged for piercing and sucking, maxillae fused into a tube, maxillary- palps five-segmented and provided inwardly with secondary palps. The legs have six segments, the tarsi terminating by two hooklets. There are two stigmata located near the insertion of the posterior legs. The cephalothorax and abdom

. A manual of zoology. Zoology. 454 ARTUROPODA. basal joints of the jiedipaljii, in which the chelicerae, either chelate, clawed, or stylet-like, play. Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and traoheas are lacking. The larva as it escapes from the egg lacks the last pair of legs and tlien closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites or TeombidiiDjE and the water mites, Hydeachnid^ (Hy- dracJina* Atax*), are free-living in the adult condition, but parasitic as young. The Stock Photo

RMRE08D3–. A manual of zoology. Zoology. 454 ARTUROPODA. basal joints of the jiedipaljii, in which the chelicerae, either chelate, clawed, or stylet-like, play. Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and traoheas are lacking. The larva as it escapes from the egg lacks the last pair of legs and tlien closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites or TeombidiiDjE and the water mites, Hydeachnid^ (Hy- dracJina* Atax*), are free-living in the adult condition, but parasitic as young. The

. Natural history. Zoology. 540 ARACHNIDA—ORDER SCORPIONIDEA, ^c. the cepTialothorax. The abdomen is without limbs, and is most frequently separated from the cephalothorax. The sexes are distinct, except in the Tardigrada. Most of the animals comprising this class are carnivorous ; but among the mites, many feed on vegetable, as well as on animal substances; and some species are parasitic, and often subcutaneous, giving rise to, or accompanying various diseases, such as itch, mange. Plica Polonica, dysentery, etc., in man and beast. The Arachidda may be classed in three main divisions. OkDEB I Stock Photo

RMRDX81D–. Natural history. Zoology. 540 ARACHNIDA—ORDER SCORPIONIDEA, ^c. the cepTialothorax. The abdomen is without limbs, and is most frequently separated from the cephalothorax. The sexes are distinct, except in the Tardigrada. Most of the animals comprising this class are carnivorous ; but among the mites, many feed on vegetable, as well as on animal substances; and some species are parasitic, and often subcutaneous, giving rise to, or accompanying various diseases, such as itch, mange. Plica Polonica, dysentery, etc., in man and beast. The Arachidda may be classed in three main divisions. OkDEB I

. Entomology for medical officers. Insect pests; Insects as carriers of disease. ORDER ACARINA: THE MITES 287 are characteristic. Many of them are predaceous on other mites and on insects, some are parasitic on animals, and some, such as the well-known " red-spiders," are very destructive to plants. The larvae of Trombidiince may affix themselves to the human skin, and when they are numerous, as they are at. Fig. 126.—DerTrumyssus, from a Fowl. certain seasons, they will give rise to erythema and intolerable itching. These larvae, which are known in all parts of the world, and in Bri Stock Photo

RMRE3Y2X–. Entomology for medical officers. Insect pests; Insects as carriers of disease. ORDER ACARINA: THE MITES 287 are characteristic. Many of them are predaceous on other mites and on insects, some are parasitic on animals, and some, such as the well-known " red-spiders," are very destructive to plants. The larvae of Trombidiince may affix themselves to the human skin, and when they are numerous, as they are at. Fig. 126.—DerTrumyssus, from a Fowl. certain seasons, they will give rise to erythema and intolerable itching. These larvae, which are known in all parts of the world, and in Bri

. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS. Symptoms.—These mites puncture the tissues forming the external canal of the ear and feed on the serum, causing an irritation which, among other things, interferes with the normal production and dis- persal of earwax. As a result the ear canal may become filled with detritus, consisting of more or less modified earwax and inflammatory prod- ucts in the form of scales or powder. The mites appear to begin operations in the region of the eardrimi, but as they multiply the Stock Photo

RMRD9KCP–. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS. Symptoms.—These mites puncture the tissues forming the external canal of the ear and feed on the serum, causing an irritation which, among other things, interferes with the normal production and dis- persal of earwax. As a result the ear canal may become filled with detritus, consisting of more or less modified earwax and inflammatory prod- ucts in the form of scales or powder. The mites appear to begin operations in the region of the eardrimi, but as they multiply the

. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. 240 MANUAL OF ZOOLOGY. â rudimentary jaws or stilets. The abdomen is undeveloped, and there are four pairs of rudimentary legs. They esdiibit no traces of either circulatory or respiratory organs, and the sexes are united in the same individual. Family 3. Acarida.â^This family includes the Mites, Ticks, and Water-mites, some of which are parasitic, whilst others are free, and some are even aquatic in their habits. The mouth is formed for suction. There is no definite line of dema Stock Photo

RMRDKMJW–. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. 240 MANUAL OF ZOOLOGY. â rudimentary jaws or stilets. The abdomen is undeveloped, and there are four pairs of rudimentary legs. They esdiibit no traces of either circulatory or respiratory organs, and the sexes are united in the same individual. Family 3. Acarida.â^This family includes the Mites, Ticks, and Water-mites, some of which are parasitic, whilst others are free, and some are even aquatic in their habits. The mouth is formed for suction. There is no definite line of dema

RMRD9KCE–. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS pockets, local destruction of the true skin or dermis takes place, and, according to some investigators, some mites now wander out of the hair follicles and may even enter the subcutaneous tissues. The numerous pustules run together and the skin becomes thickened and so seriously weakened from disease that it is highly susceptible to injury from rubbiug or contact with various objects. The odor is very unpleasant. There is little or no itching in this stage. The absorpt

. The care of animals;. Veterinary medicine; Domestic animals. 336 The Care of Animals TICKS Ticks and mites are closely related, to the spider tribes. They are not insects. Most of the ticks are only partially parasitic; that is, only a part of their lives is spent upon the bodies of other animals. The most injurious parasitic tick is the southern cattle tick {Boophilus annulatus). Fig. 52«. This crea- ture is important, not only because of the losses resulting from its attacks, but also because it is the carrier of the germs of Texas or southern cattle fever from southern to susceptible nort Stock Photo

RMRFRXYG–. The care of animals;. Veterinary medicine; Domestic animals. 336 The Care of Animals TICKS Ticks and mites are closely related, to the spider tribes. They are not insects. Most of the ticks are only partially parasitic; that is, only a part of their lives is spent upon the bodies of other animals. The most injurious parasitic tick is the southern cattle tick {Boophilus annulatus). Fig. 52«. This crea- ture is important, not only because of the losses resulting from its attacks, but also because it is the carrier of the germs of Texas or southern cattle fever from southern to susceptible nort

RMRE1BPG–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE MITES 95 Due to parasitism, the mites have undergone considerable modifica- tion, the scab mites are without eyes or organs of respiration, and gener- ally the tips of the feet are terminated by suckers or bristles. In the larval stage, the Acarina have but three pairs of legs, the fourth pair appearing behind the third after a molt. The mouth parts are modified into a beak-Uke structure for piercing and sucking.

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. GRAIN MITES 339 detachments of mites are constantly acquired. In severe in- festations the irritation and poisoning is sufficient to cause constitutional symptoms such as fever, high pulse, headache, nausea, etc. Since the mites cannot thrive on human blood, and remain attached to the skin for only a short time, no treatment for destroying them is necessary. Remedies to relieve the itching, such as the application of soda or soothing ointments, or warm bath Stock Photo

RMRN4DBH–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. GRAIN MITES 339 detachments of mites are constantly acquired. In severe in- festations the irritation and poisoning is sufficient to cause constitutional symptoms such as fever, high pulse, headache, nausea, etc. Since the mites cannot thrive on human blood, and remain attached to the skin for only a short time, no treatment for destroying them is necessary. Remedies to relieve the itching, such as the application of soda or soothing ointments, or warm bath

. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. BIRD MITES. 519 The four creatures described in the following lines are parasitic on birds. The species called Menopon -pallidum is unpleasantly familiar to poulti'y-keepers, swarming among the feathers to such a degree that the hands are often coveced with these parasites when the fowls are plucked or even lifted up. They cling very tightly, and are not easily brushed away, as their bodies are smoothly polished, and oifer scarcely any resistance. The color of this species is pale straw. Stock Photo

RMRN3Y7M–. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. BIRD MITES. 519 The four creatures described in the following lines are parasitic on birds. The species called Menopon -pallidum is unpleasantly familiar to poulti'y-keepers, swarming among the feathers to such a degree that the hands are often coveced with these parasites when the fowls are plucked or even lifted up. They cling very tightly, and are not easily brushed away, as their bodies are smoothly polished, and oifer scarcely any resistance. The color of this species is pale straw.

RMRN42M7–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similar—hivelike or rashlike eruptions of the skin, in- tense itching

. Animal biology. Zoology; Biology. CLASS ARACHNIDA 301 mites can spin silken threads from openings on the ventral side of the abdomen, in some cases near the anus. Among mites are many which are of decided economic importance. The ticks are parasitic upon various animals and, since they pass from one individual to another, are capable of transmitting diseases. In the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wolcott Stock Photo

RMRN5HFP–. Animal biology. Zoology; Biology. CLASS ARACHNIDA 301 mites can spin silken threads from openings on the ventral side of the abdomen, in some cases near the anus. Among mites are many which are of decided economic importance. The ticks are parasitic upon various animals and, since they pass from one individual to another, are capable of transmitting diseases. In the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wolcott

. Biology and human life. Biology. CLASSES OF ANIMALS 451 3. Class Arachnida. Most of the true spiders are useful be- cause of their constant warfare upon insects. The ticks are altogether parasitic; the mites are responsible for the itch, for sheep scab, for the chicken-mite disease, and for damage to other domestic animals, as well as to greenhouse and orchard or field plants. In most cases the best thing for protecting plants is powdered sulfur. The jigger, or harvest mite, usually lives upon plants, but sometimes makes itself at home on human beings. 4. Class Insecta. The insects constitut Stock Photo

RMRHK65F–. Biology and human life. Biology. CLASSES OF ANIMALS 451 3. Class Arachnida. Most of the true spiders are useful be- cause of their constant warfare upon insects. The ticks are altogether parasitic; the mites are responsible for the itch, for sheep scab, for the chicken-mite disease, and for damage to other domestic animals, as well as to greenhouse and orchard or field plants. In most cases the best thing for protecting plants is powdered sulfur. The jigger, or harvest mite, usually lives upon plants, but sometimes makes itself at home on human beings. 4. Class Insecta. The insects constitut

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 334 THE MITES bites or stings — it does neither; worse than either, it just tickles." The adult harvest mites (Fig. 137) are law abiding members of the community, and attack only such animals as plant-lice, cater- pillars and other insects. They hibernate in soil or sheltered crevices and in the spring lay their eggs, several hundred apiece, in the ground or among dead leaves. The eggs are very small, round and brownish in color, and were once classifi Stock Photo

RMRN43JN–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 334 THE MITES bites or stings — it does neither; worse than either, it just tickles." The adult harvest mites (Fig. 137) are law abiding members of the community, and attack only such animals as plant-lice, cater- pillars and other insects. They hibernate in soil or sheltered crevices and in the spring lay their eggs, several hundred apiece, in the ground or among dead leaves. The eggs are very small, round and brownish in color, and were once classifi

RMRDHPRJ–. The horse in health and disease : a text-book pertaining to veterinary science for agricultural students . Horses; Horses. PARASITES AND PARASITIC DISEASES 231 To destroy mange mites it is necessary to scrub the infested parts of the body with a warm coal-tar dip solution, or decoction made by boiling 1^ pounds of tobacco leaves in 8 quarts of water. The harness, currycombs, brushes, and other stable paraphernalia should also be thoroughly saturated with the solution to kill any mites which may have crawled onto them. Treatment ought to be repeated in a week or ten days, to destroy such youn

RMRDJ6A9–. A manual of zoology. Zoology. II. ACERATA: LINGUATULIDA 397 into a sucking beak. This consists of a tube formed by the basal joints of the pedipalpi, in which the chehcerx, either chelate, clawed, or stylet-like, play Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and trache£e are lacking. The larva as it escapes from the egg lacks the last pair of legs and then closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites (Trombidiid.-e) and water mites, HYDRACHNlDa; (Hydraclma* Atax'^'), are f

. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 243 face of the skin where they are sheltered by scabs and scurf; and the Symbiotes^ which also live on the surface of the skin, but prefer the regions of the hind feet and legs. Acari multiply rapidly and live their entire life on the body of the host. A new generation is produced in about fifteen days. Gerlach has estimated the natural increase in three months at 1,000,000 females and 500,000 males. Scab and mange are exceedingly contagious diseases.. Please note that these images are extracted from scanned p Stock Photo

RMREFM0T–. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 243 face of the skin where they are sheltered by scabs and scurf; and the Symbiotes^ which also live on the surface of the skin, but prefer the regions of the hind feet and legs. Acari multiply rapidly and live their entire life on the body of the host. A new generation is produced in about fifteen days. Gerlach has estimated the natural increase in three months at 1,000,000 females and 500,000 males. Scab and mange are exceedingly contagious diseases.. Please note that these images are extracted from scanned p

. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 148 FISH ENEMIES Mites (Hydrachna). These odd-looking little balls of intense red are sometimes placed in small tropical aquaria with fishes. This is in- Fic. 146. Water Mite (Enlarged about four times) advisable, as they are parasitic. It is doubtful whether they actually kill their host. They are common in the still water of lily ponds. Hydra. Although Hydra is not an insect, we include it here as an important enemy of young fishes. Hydra is a polyp which attaches itself Stock Photo

RMRE3EX0–. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 148 FISH ENEMIES Mites (Hydrachna). These odd-looking little balls of intense red are sometimes placed in small tropical aquaria with fishes. This is in- Fic. 146. Water Mite (Enlarged about four times) advisable, as they are parasitic. It is doubtful whether they actually kill their host. They are common in the still water of lily ponds. Hydra. Although Hydra is not an insect, we include it here as an important enemy of young fishes. Hydra is a polyp which attaches itself

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 340 THE MITES the body is hard and chitinous, there is no mouth or mouthparts, the legs are short and stumpy, and there is usually a raised area on the ventral surface with a number of tiny sucking discs. By means of these suckers the hypopus attaches itself to insects or other creatures and is thus transported to new localities, the entire object of the hypopus stage apparently being to secure passage to new breeding grounds. After dropping from its unwill Stock Photo

RMRN43GB–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 340 THE MITES the body is hard and chitinous, there is no mouth or mouthparts, the legs are short and stumpy, and there is usually a raised area on the ventral surface with a number of tiny sucking discs. By means of these suckers the hypopus attaches itself to insects or other creatures and is thus transported to new localities, the entire object of the hypopus stage apparently being to secure passage to new breeding grounds. After dropping from its unwill

. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 6o Parasitic Arthropods The Trombidiidae, or Harvest Mites In many parts of this country it is impossible for a visitor to go into the fields and, particularly, into berry patches and among tall weeds and grass in the summer or early fall without being afEected by an intolerable itching, which is followed, later, by a breaking out of wheals, or papules, surrounded by a bright red or violaceous aureola, (fig. 43). It is often regarded as a urticaria or eczema, produced by change of climate, an Stock Photo

RMRE3J10–. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 6o Parasitic Arthropods The Trombidiidae, or Harvest Mites In many parts of this country it is impossible for a visitor to go into the fields and, particularly, into berry patches and among tall weeds and grass in the summer or early fall without being afEected by an intolerable itching, which is followed, later, by a breaking out of wheals, or papules, surrounded by a bright red or violaceous aureola, (fig. 43). It is often regarded as a urticaria or eczema, produced by change of climate, an

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similar—hivelike or ras Stock Photo

RMRN4DC7–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similar—hivelike or ras

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 342 THE MITES Itch Mites The itch mites, belonging to the family Sarcoptidae, are the cause of scabies or mange in various kinds of domestic and wild animals, and of " itch " in man. This disease is one which has been known for a very long time but was formerly supposed to be caused by " bad blood " or other constitutional disorders such as cause the growth of pimples. Even at the present time the true cause of the disease is not underst Stock Photo

RMRN43FN–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 342 THE MITES Itch Mites The itch mites, belonging to the family Sarcoptidae, are the cause of scabies or mange in various kinds of domestic and wild animals, and of " itch " in man. This disease is one which has been known for a very long time but was formerly supposed to be caused by " bad blood " or other constitutional disorders such as cause the growth of pimples. Even at the present time the true cause of the disease is not underst

RMRD9K0H–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Other Occasionally Parasitic Species There are many species of mites, of several different families, which under abnormal circumstances or by sheer accident may become troublesome parasites of man. Nearly all mites secrete salivary juices which have a toxic effect when injected into the blood; therefore any mite which will bite man under any circum- stances may become a pest. In nearly all cases the symp- toms of attacks by mites are similarâhivelike or rashlike eruptions of the skin, in- tense itching

. Bulletin - United States National Museum. Science. BULLETIN 39, UNITED STATES NATIONAL MUSEUM. [128] figure, Notlirus ovivorus lias been observed by Dr. Packard to eat the €ggs of the Canker Worm. The members of the family Gamasidie are parasitic upon animals, but chiefly upon insects. The Hydrachnidse are parasitic also upon the aquatic insects, and also affect fish or mussels or occur on fresh-water j^lants. One of the most imjDortant families of mites is the Trombidiidise which includes a large number of species, some of which occur in immense num- bers. Most of them are vegetable feeders Stock Photo

RMRGW9BR–. Bulletin - United States National Museum. Science. BULLETIN 39, UNITED STATES NATIONAL MUSEUM. [128] figure, Notlirus ovivorus lias been observed by Dr. Packard to eat the €ggs of the Canker Worm. The members of the family Gamasidie are parasitic upon animals, but chiefly upon insects. The Hydrachnidse are parasitic also upon the aquatic insects, and also affect fish or mussels or occur on fresh-water j^lants. One of the most imjDortant families of mites is the Trombidiidise which includes a large number of species, some of which occur in immense num- bers. Most of them are vegetable feeders

. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. c^?^. deutovum. The larva (figs. 80, 81 j on hatching is six-legged, and in some cases is parasitic in the respiratory system of mollusks or attached to aquatic insects. Neu- mann has claimed that in one species of Limnesia the form hatching from the egg is eight-legged and therefore a nymph, as in Spintumix. Kramer has arranged the larvae in three series, which he considers is the basis of classifica- tion. As a whole, the larvae differ greatl}^ from the adults and many were described as different crea Stock Photo

RMRR3JHT–. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. c^?^. deutovum. The larva (figs. 80, 81 j on hatching is six-legged, and in some cases is parasitic in the respiratory system of mollusks or attached to aquatic insects. Neu- mann has claimed that in one species of Limnesia the form hatching from the egg is eight-legged and therefore a nymph, as in Spintumix. Kramer has arranged the larvae in three series, which he considers is the basis of classifica- tion. As a whole, the larvae differ greatl}^ from the adults and many were described as different crea

. Poultry diseases and their treatment. Poultry. POULTRY DISEASES AND THEIR TREATAIENT. 133 of great economic importance. Occasionally one or another of the other species becomes sufficiently abvmdant to be of local importance. The mites are small 8-legged animals related to the spiders. Some of the mites parasitic on the fowl visit their host only to feed, as the common red mite; others remain on the surface of the skin or on the feathers, as in the case of deplum- ing scabies. Others live under the skin, causing deep-seated skin diseases like scaly leg; still others find their way into the i Stock Photo

RMRE1C1W–. Poultry diseases and their treatment. Poultry. POULTRY DISEASES AND THEIR TREATAIENT. 133 of great economic importance. Occasionally one or another of the other species becomes sufficiently abvmdant to be of local importance. The mites are small 8-legged animals related to the spiders. Some of the mites parasitic on the fowl visit their host only to feed, as the common red mite; others remain on the surface of the skin or on the feathers, as in the case of deplum- ing scabies. Others live under the skin, causing deep-seated skin diseases like scaly leg; still others find their way into the i

. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 214 Diseases of Poultry under the skin, causing deep-seated skin diseases like scaly- leg; still others find their way into the internal regions of the body, living either on mucous membrances like the air-sac mite (p. 180) or upon the connective tissue like the connec- tive tissue mite. The most common and most injurious mite parasitic on fowls is the common fowl mite or red mite, Dermanyssus galliiKB. These mites are present in almost every poultry house that is not kept very clean. When they are present. F Stock Photo

RMRE0H78–. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 214 Diseases of Poultry under the skin, causing deep-seated skin diseases like scaly- leg; still others find their way into the internal regions of the body, living either on mucous membrances like the air-sac mite (p. 180) or upon the connective tissue like the connec- tive tissue mite. The most common and most injurious mite parasitic on fowls is the common fowl mite or red mite, Dermanyssus galliiKB. These mites are present in almost every poultry house that is not kept very clean. When they are present. F

. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. deutovum. The larva (figs. 80, 81 j on hatching is six-legged, and in some cases is parasitic in the respiratory system of mollusks or attached to aquatic insects. Neu- mann has claimed that in one species of Limnesia the form hatching from the egg is eight-legged and therefore a nymph, as in Spintumix. Kramer has arranged the larvae in three series, which he considers is the basis of classifica- tion. As a whole, the larvae differ greatl}^ from the adults and many were described as different crea- ture Stock Photo

RMRR3JHM–. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. deutovum. The larva (figs. 80, 81 j on hatching is six-legged, and in some cases is parasitic in the respiratory system of mollusks or attached to aquatic insects. Neu- mann has claimed that in one species of Limnesia the form hatching from the egg is eight-legged and therefore a nymph, as in Spintumix. Kramer has arranged the larvae in three series, which he considers is the basis of classifica- tion. As a whole, the larvae differ greatl}^ from the adults and many were described as different crea- ture

RMRDC2E1–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 160 ASCOMYCETES. * Witches' brooms on birch are very common in Scotland. They appear as tangled masses of twigs, which at first sight give the impression of some bird's nest. I have frequently examined the leaves borne on these brooms, and have never failed to find the asci of an Uxoascus. Sadebeck gives in his monograph the two above-named species as found on birches bearing v.atches' brooms. Mites (e.g. Phytoptus)

. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 241 remedy. The absorption of a small amount of this drug does the animal no harm, hut a larger quantity may salivate it. Sheep are treated hy dipping in a water solution of a reliahlc coal tar disinfectant. This should not he practised during cold weather, as the fleece does not dry out. Insect powder may he dusted into the fleece when it is impossible to dip the animal. A very satisfactory treatment for lousiness in dogs and cats is to wash them with earholized soap. We should wait a few minutes before rinsin Stock Photo

RMREFM47–. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 241 remedy. The absorption of a small amount of this drug does the animal no harm, hut a larger quantity may salivate it. Sheep are treated hy dipping in a water solution of a reliahlc coal tar disinfectant. This should not he practised during cold weather, as the fleece does not dry out. Insect powder may he dusted into the fleece when it is impossible to dip the animal. A very satisfactory treatment for lousiness in dogs and cats is to wash them with earholized soap. We should wait a few minutes before rinsin

. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. Fig. 268.—Psoroptes communis var. ovis: Male. (Author's illustration.). Fig. 2Q0.—Psoroptes communis var. avis: Female and caroncle enlarged. (Au- thor's illustration.) Sarcoptcs includes the species parasitic on man, although some other genera may sometimes attack him. The human species is 5. scabci De Geer (figs. 2(54, 2G5). This pest was formerly more common than now, particularly in armies. The intolerable itching caused by the presence of these mites leads to wild and incessiint scratching, which o Stock Photo

RMRR4CPY–. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. Fig. 268.—Psoroptes communis var. ovis: Male. (Author's illustration.). Fig. 2Q0.—Psoroptes communis var. avis: Female and caroncle enlarged. (Au- thor's illustration.) Sarcoptcs includes the species parasitic on man, although some other genera may sometimes attack him. The human species is 5. scabci De Geer (figs. 2(54, 2G5). This pest was formerly more common than now, particularly in armies. The intolerable itching caused by the presence of these mites leads to wild and incessiint scratching, which o

. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. 24 Mites Injtirious to Domestic Animals. Genixs Sarcofies, Latreille, 1806. Dorsal suiface furnished with characteristic sharply pointed (dentate) scales and also with symmetrically arranged rod-like setae posteriorly. Mites of the genus Sarcoftes are parasitic on a fairly large number. Fig. 7. Dorsal view of male of Otodectes cynotis, var. canis, x 125. (Original.) of hosts, probably including all the domestic animals (mammals) but specimens found on different hosts Stock Photo

RMRDYKT1–. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. 24 Mites Injtirious to Domestic Animals. Genixs Sarcofies, Latreille, 1806. Dorsal suiface furnished with characteristic sharply pointed (dentate) scales and also with symmetrically arranged rod-like setae posteriorly. Mites of the genus Sarcoftes are parasitic on a fairly large number. Fig. 7. Dorsal view of male of Otodectes cynotis, var. canis, x 125. (Original.) of hosts, probably including all the domestic animals (mammals) but specimens found on different hosts

. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 26 CLASS ARACHNIDA are fitted for piercing, biting, or in some cases for combined biting and suction, there being usually a pair of slender, sharp mandibles capable of penetrating the skin of the host animals. Much variation of habit exists, and ranges from free forms to strictly parasitic forms.. Fig. 5—Tetranychus gloveri: Adult—much enlarged, (Titus, Div. Ent., U. S. Dept. Ag.) Harvest Mites; Chiggers. In the family Tromhidiidoe, which includes normally plant- feeding spe Stock Photo

RMRR1NG7–. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 26 CLASS ARACHNIDA are fitted for piercing, biting, or in some cases for combined biting and suction, there being usually a pair of slender, sharp mandibles capable of penetrating the skin of the host animals. Much variation of habit exists, and ranges from free forms to strictly parasitic forms.. Fig. 5—Tetranychus gloveri: Adult—much enlarged, (Titus, Div. Ent., U. S. Dept. Ag.) Harvest Mites; Chiggers. In the family Tromhidiidoe, which includes normally plant- feeding spe

. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. Fig. 27. Pterolichus sp., from interior of quills of feathers of North American fowl, female from below, X 104. (a) Tarsus of second leg of same greatly enlarged. (b) Denticle on firsts tarsus very greatly enlarged. (Original.) Leaflet No. 274, issued by the Ministry of Agriculture and Fisheries, should be consulted by those interested in parasitic mange in horses, asses, and mules. Remedies, symptoms,Fetc., will be found in this leaflet.. Please note that these image Stock Photo

RMRDYKK3–. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. Fig. 27. Pterolichus sp., from interior of quills of feathers of North American fowl, female from below, X 104. (a) Tarsus of second leg of same greatly enlarged. (b) Denticle on firsts tarsus very greatly enlarged. (Original.) Leaflet No. 274, issued by the Ministry of Agriculture and Fisheries, should be consulted by those interested in parasitic mange in horses, asses, and mules. Remedies, symptoms,Fetc., will be found in this leaflet.. Please note that these image

. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. Mites hijurious to Domestic Animals. 91 have been found on rabbits, but little is known about tbe structure or habits of this mite. Some of the mites of the genus Laelafs, C. L. Koch, are parasitic on rodents, moles, and other small mammals. One species (X. ecMdninus, Berlese, fig. 71) is parasitic on the brown rat and, like its host, is probably cosmopolitan ; another species {L. nuttalli, Hirst) is common both on the black rat and brown rat in tropical regions. The Stock Photo

RMRDYK29–. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. Mites hijurious to Domestic Animals. 91 have been found on rabbits, but little is known about tbe structure or habits of this mite. Some of the mites of the genus Laelafs, C. L. Koch, are parasitic on rodents, moles, and other small mammals. One species (X. ecMdninus, Berlese, fig. 71) is parasitic on the brown rat and, like its host, is probably cosmopolitan ; another species {L. nuttalli, Hirst) is common both on the black rat and brown rat in tropical regions. The

. A textbook in general zoology. Zoology. SCORPIONS, SPIDERS, AND TICKS 145 are attached two long appendages, ending in claws, that greatly resemble those of a crayfish. Scorpions are found in the southern states and in tropical countries. They are nocturnal in habits, remaining hidden during the day. Mites. — Unlike the scorpions, these animals have the abdomen joined to the cephalothorax so closely that the body appears as one solid, sacklike piece. The mites are small animals and many of them are parasitic on other ani- mals and on plants. The so-called red spi- der that lives upon house pl Stock Photo

RMRDH0JK–. A textbook in general zoology. Zoology. SCORPIONS, SPIDERS, AND TICKS 145 are attached two long appendages, ending in claws, that greatly resemble those of a crayfish. Scorpions are found in the southern states and in tropical countries. They are nocturnal in habits, remaining hidden during the day. Mites. — Unlike the scorpions, these animals have the abdomen joined to the cephalothorax so closely that the body appears as one solid, sacklike piece. The mites are small animals and many of them are parasitic on other ani- mals and on plants. The so-called red spi- der that lives upon house pl

. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. 30 Mites Injiirious to Domestic Animals. The health of the goats sufiering from this kind of scabies is some- times greatly afEected ; they become thin, and death frequently ensues. The Sarcoptes of the goat {Sarcoptes scabiei, var. caprae, Fiirstenberg) can be transmitted to man, and also to horses, sheep, cattle, and pigs.. H.att, il Fig. 12. Notoedrus muris, parasitic on brown rat (p. 6l). Dorsal view of female, x 230. (Original.) Sarcoptic Mange in Camels and Drom Stock Photo

RMRDYKPJ–. Mites injurious to domestic animals (with an appendix on the acarine disease of hive bees). Mites; Veterinary medicine; Bees. 30 Mites Injiirious to Domestic Animals. The health of the goats sufiering from this kind of scabies is some- times greatly afEected ; they become thin, and death frequently ensues. The Sarcoptes of the goat {Sarcoptes scabiei, var. caprae, Fiirstenberg) can be transmitted to man, and also to horses, sheep, cattle, and pigs.. H.att, il Fig. 12. Notoedrus muris, parasitic on brown rat (p. 6l). Dorsal view of female, x 230. (Original.) Sarcoptic Mange in Camels and Drom

RMRDA357–. Fresh-water biology. Freshwater biology. Fig. 13 21. Figures showing the ventral surface of the body of the nymphs of several genera ol water-mites. (Appendages are similar to those of the adult and not shown here; compare with figures of adults on succeeding pages.) a, Arrhenurus; b, Limnesia; c, Sperchon; d, Hygrobales; e, Fiona; /, Leberlia. (Modified from Piersig.) •distinguish the adult. During this nymph stage the mite is not usually parasitic except in the case of the mussel parasites. How- ever, Unionicola crassipes has been found by Soar, in all stages, in the fresh-water sponge, an

. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. Fig. 78.—Arrenurus sp.: Palpus. (Au- thor's illustration.) Fig. 79.—Arrenurus sp.: Fe- male from below. (Author's illustration.) Fig. 80.—Larva of a hydrachnid. (Original.) The genus Limnochares (figs. 72, 73) is practically an acjuatic trombidian; the body is of the same shape, and red in color. It can not swim, but creeps over the mud and plants under water. The young are parasitic on water skaters (Gerridae). Our species is very like the European. We have three species of Eylais (figs. 74, 75). They Stock Photo

RMRR3JHE–. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. Fig. 78.—Arrenurus sp.: Palpus. (Au- thor's illustration.) Fig. 79.—Arrenurus sp.: Fe- male from below. (Author's illustration.) Fig. 80.—Larva of a hydrachnid. (Original.) The genus Limnochares (figs. 72, 73) is practically an acjuatic trombidian; the body is of the same shape, and red in color. It can not swim, but creeps over the mud and plants under water. The young are parasitic on water skaters (Gerridae). Our species is very like the European. We have three species of Eylais (figs. 74, 75). They

. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 237 headed horse louse, //. macrocephalus; the long-nosed ox louse, //. tenuirostris; the larg-e-bellied ox louse, H. eurysternus; the H. stenopses of sheep; //. suis of swine; and the //. piliferus of the dog. The common hiting lice (Fig. 63) that are found on domestic animals are the T. pilosus and T. puhescens of solipeds, T. scalaris of the ox, T. spcerocephalus of sheep and goats, T. laius and T. suhrostratus of the dog and cat. Menopon palidum, L'lpiurus rariahllis and Gon- oides dissimilis are the com- m Stock Photo

RMREFM51–. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 237 headed horse louse, //. macrocephalus; the long-nosed ox louse, //. tenuirostris; the larg-e-bellied ox louse, H. eurysternus; the H. stenopses of sheep; //. suis of swine; and the //. piliferus of the dog. The common hiting lice (Fig. 63) that are found on domestic animals are the T. pilosus and T. puhescens of solipeds, T. scalaris of the ox, T. spcerocephalus of sheep and goats, T. laius and T. suhrostratus of the dog and cat. Menopon palidum, L'lpiurus rariahllis and Gon- oides dissimilis are the com- m

. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. 26 CLASS ARACHNIDA are fitted for piercing, biting, or in some cases for combined biting and suction, there being usually a pair of slender, sharp mandibles capable of penetrating the skin of the host animals. Much variation of habit exists, and ranges from free forms to strictly parasitic forms.. Fig. 5—Tetranychus gloveri: Adult—much enlarged. (Titus, Div. Ent., U. S. Dept. Ag.) Harvest Mites; Chiggers. In the family TromhidiidoB, which includes normally plant- feeding sp Stock Photo

RMRR1M90–. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. 26 CLASS ARACHNIDA are fitted for piercing, biting, or in some cases for combined biting and suction, there being usually a pair of slender, sharp mandibles capable of penetrating the skin of the host animals. Much variation of habit exists, and ranges from free forms to strictly parasitic forms.. Fig. 5—Tetranychus gloveri: Adult—much enlarged. (Titus, Div. Ent., U. S. Dept. Ag.) Harvest Mites; Chiggers. In the family TromhidiidoB, which includes normally plant- feeding sp

. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 241 remedy. The absorption of a small amoimt of this drug does the animal no harm, hnt a larger qnantitj may salivate it. Sheep are treated by dipping in a water solution of a reliable coal tar disinfectant. This should not be practised during cold weather, as the fleece does not dry ont. Insect powder may be dnsted into the fleece when it is impossible to dip the animal. A very satisfactory treatment for lousiness in dogs and cats is to wash them with carbolized soap. We should wait a few minutes before rinsin Stock Photo

RMREFM1E–. Common diseases of farm animals. Veterinary medicine. PARASITIC INSECTS AND MITES 241 remedy. The absorption of a small amoimt of this drug does the animal no harm, hnt a larger qnantitj may salivate it. Sheep are treated by dipping in a water solution of a reliable coal tar disinfectant. This should not be practised during cold weather, as the fleece does not dry ont. Insect powder may be dnsted into the fleece when it is impossible to dip the animal. A very satisfactory treatment for lousiness in dogs and cats is to wash them with carbolized soap. We should wait a few minutes before rinsin

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. LINGUATULA RHINARIA 349 and there encyst (Fig. 146D). After a series of moults a second larval stage is entered upon, this time with a wormlike appear- ance much more like that of the adult (Fig. 146E). At this stage a " wanderlust " seizes the tongue-worm and it begins an active migration in an endeavor to reach a more satis- factory site for adult life. The mites may settle in the res-. BCX125) Fig. 146. Life history of tongue-worm, Linguatula r Stock Photo

RMRN43CY–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. LINGUATULA RHINARIA 349 and there encyst (Fig. 146D). After a series of moults a second larval stage is entered upon, this time with a wormlike appear- ance much more like that of the adult (Fig. 146E). At this stage a " wanderlust " seizes the tongue-worm and it begins an active migration in an endeavor to reach a more satis- factory site for adult life. The mites may settle in the res-. BCX125) Fig. 146. Life history of tongue-worm, Linguatula r

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