![. Text-book of embryology. Embryology. 278 INVEETEBEATA CHAP. forms a deep pouch with wide opening from the bottom, out of which the wing grows up. This condition is found in the more primitive Diptera, such as Culicidae and Tipulidae, which also have long antennae. The Lepidoptera agree with the Chrysomelidae in their mode of wing development. It is obvious that the only difference between the development of a Buprestid beetle and an Orthopteran is that the Orthopteran is active at all stages of larval life till the adult condition is attained, whereas in the Buprestid a quiescent stage, the - Stock Image]() . Text-book of embryology. Embryology. 278 INVEETEBEATA CHAP. forms a deep pouch with wide opening from the bottom, out of which the wing grows up. This condition is found in the more primitive Diptera, such as Culicidae and Tipulidae, which also have long antennae. The Lepidoptera agree with the Chrysomelidae in their mode of wing development. It is obvious that the only difference between the development of a Buprestid beetle and an Orthopteran is that the Orthopteran is active at all stages of larval life till the adult condition is attained, whereas in the Buprestid a quiescent stage, the
 . Text-book of embryology. Embryology. 278 INVEETEBEATA CHAP. forms a deep pouch with wide opening from the bottom, out of which the wing grows up. This condition is found in the more primitive Diptera, such as Culicidae and Tipulidae, which also have long antennae. The Lepidoptera agree with the Chrysomelidae in their mode of wing development. It is obvious that the only difference between the development of a Buprestid beetle and an Orthopteran is that the Orthopteran is active at all stages of larval life till the adult condition is attained, whereas in the Buprestid a quiescent stage, the https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/text-book-of-embryology-embryology-278-inveetebeata-chap-forms-a-deep-pouch-with-wide-opening-from-the-bottom-out-of-which-the-wing-grows-up-this-condition-is-found-in-the-more-primitive-diptera-such-as-culicidae-and-tipulidae-which-also-have-long-antennae-the-lepidoptera-agree-with-the-chrysomelidae-in-their-mode-of-wing-development-it-is-obvious-that-the-only-difference-between-the-development-of-a-buprestid-beetle-and-an-orthopteran-is-that-the-orthopteran-is-active-at-all-stages-of-larval-life-till-the-adult-condition-is-attained-whereas-in-the-buprestid-a-quiescent-stage-the-image232126925.html
![. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete - Stock Image]() . Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete
 . Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handbook-of-nature-study-for-teachers-and-parents-based-on-the-cornell-nature-study-leaflets-nature-study-insect-study-31-perfect-wings-it-does-not-grow-larger-many-adult-insects-take-very-little-food-although-some-continue-to-eat-in-order-to-support-life-the-adult-stage-is-ordinarily-shorter-than-the-larval-stage-it-seems-a-part-of-natures-economic-plan-that-the-grown-up-insects-should-live-only-long-enough-to-lay-eggs-and-thus-secure-the-continuation-of-the-species-insects-having-the-four-distinct-stages-in-their-growth-egg-larva-pupa-and-adult-are-said-to-undergo-complete-image216356307.html
![. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes that the Ixodidse are more h - Stock Image]() . Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes that the Ixodidse are more h
 . Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes that the Ixodidse are more hhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handbook-of-medical-entomology-insect-pests-insects-as-carriers-of-disease-medical-parasitology-40-ixodes-ricinus-male-ventral-aspect-braun-and-lwehe-after-work-indicates-that-their-long-evity-has-been-considerably-under-estimated-typically-they-are-permanent-feeders-remaining-on-the-host-or-hosts-during-the-greater-part-of-their-life-they-molt-twice-only-on-leaving-the-larval-and-the-nymphal-stages-the-adult-female-deposits-a-single-large-batch-of-eggs-contrasting-the-habits-of-the-ixodidas-to-those-of-the-argasidse-nuttall-1911-emphasizes-that-the-ixodidse-are-more-h-image232419918.html
![. A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secu - Stock Image]() . A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secu
 . A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secuhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-manual-for-the-study-of-insects-insects-s6-the-study-of-insects-grow-no-larger-except-that-in-case-of-females-the-body-may-be-distended-by-the-growth-of-eggs-within-it-while-many-adults-eat-more-or-less-it-is-only-to-sustain-life-and-not-for-growth-indeed-many-adult-insects-take-very-little-food-and-some-have-lost-their-mouth-parts-entirely-through-disuse-the-adult-stage-usually-lasts-for-a-considerably-shorter-time-than-the-larval-or-nymph-stages-in-fact-it-seems-planned-in-the-economy-of-nature-that-the-grown-up-insects-should-hve-only-long-enough-to-lay-eggs-and-thus-secu-image216311935.html
![. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 66 Parasitic Arthropods. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes tha - Stock Image]() . Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 66 Parasitic Arthropods. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes tha
 . Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 66 Parasitic Arthropods. 40. Ixodes ricinus; male, ventral aspect, Braun and Lwehe. After work indicates that their long- evity has been considerably under-estimated. Typically, they are permanent feeders, remaining on the host, or hosts, during the greater part of their life. They molt twice only, on leaving the larval and the nymphal stages. The adult female deposits a single, large batch of eggs. Contrasting the habits of the Ixodidas to those of the Argasidse, Nuttall (1911) emphasizes thahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handbook-of-medical-entomology-insect-pests-insects-as-carriers-of-disease-medical-parasitology-66-parasitic-arthropods-40-ixodes-ricinus-male-ventral-aspect-braun-and-lwehe-after-work-indicates-that-their-long-evity-has-been-considerably-under-estimated-typically-they-are-permanent-feeders-remaining-on-the-host-or-hosts-during-the-greater-part-of-their-life-they-molt-twice-only-on-leaving-the-larval-and-the-nymphal-stages-the-adult-female-deposits-a-single-large-batch-of-eggs-contrasting-the-habits-of-the-ixodidas-to-those-of-the-argasidse-nuttall-1911-emphasizes-tha-image232419922.html
![. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete - Stock Image]() . Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete
 . Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3^1 perfect wings, it does not grow larger. Many adult insects take very little food, although some continue to eat in order to support life. The adult stage is ordinarily shorter than the larval stage; it seems a part of nature's economic plan that the grown-up insects should live only long enough to lay eggs, and thus secure the continuation of the species. Insects having the four distinct stages in their growth, egg, larva, pupa and adult, are said to undergo complete https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/handbook-of-nature-study-for-teachers-and-parents-based-on-the-cornell-nature-study-leaflets-nature-study-insect-study-31-perfect-wings-it-does-not-grow-larger-many-adult-insects-take-very-little-food-although-some-continue-to-eat-in-order-to-support-life-the-adult-stage-is-ordinarily-shorter-than-the-larval-stage-it-seems-a-part-of-natures-economic-plan-that-the-grown-up-insects-should-live-only-long-enough-to-lay-eggs-and-thus-secure-the-continuation-of-the-species-insects-having-the-four-distinct-stages-in-their-growth-egg-larva-pupa-and-adult-are-said-to-undergo-complete-image231973197.html
![. A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secu - Stock Image]() . A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secu
 . A manual for the study of insects. Insects. S6 THE STUDY OF INSECTS. grow no larger, except that in case of females the body may be distended by the growth of eggs within it. While many adults eat more or less, it is only to sustain life, and not for growth. Indeed, many adult insects take very little food, and some have lost their mouth-parts entirely, through disuse. The adult stage usually lasts for a considerably shorter time than the larval or nymph stages. In fact, it seems planned in the economy of nature that the grown-up insects should Hve only long enough to lay eggs, and thus secuhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-manual-for-the-study-of-insects-insects-s6-the-study-of-insects-grow-no-larger-except-that-in-case-of-females-the-body-may-be-distended-by-the-growth-of-eggs-within-it-while-many-adults-eat-more-or-less-it-is-only-to-sustain-life-and-not-for-growth-indeed-many-adult-insects-take-very-little-food-and-some-have-lost-their-mouth-parts-entirely-through-disuse-the-adult-stage-usually-lasts-for-a-considerably-shorter-time-than-the-larval-or-nymph-stages-in-fact-it-seems-planned-in-the-economy-of-nature-that-the-grown-up-insects-should-hve-only-long-enough-to-lay-eggs-and-thus-secu-image231891899.html
![. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 54 CITRUS FRTTTT.q TTMn^p tdot/-a -»--i-vxvxvji.i. J. xvyxN Wings, and antennae. The eggs hatch in about 10 days, and the larval and pupal stage occupy from 4 to 6 weeks. There is much overlapping of generations, and it has been estimated that as many as twelve generations a year may be produced. The insects feed during all stages of the life cycle. The remedy and its application for the greenhouse thrip is the same as for the citrus thrip. 50. Orange Tortrlx.—The orange tortrix is a gray moth about i inch long. The larva burrows - Stock Image]() . Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 54 CITRUS FRTTTT.q TTMn^p tdot/-a -»--i-vxvxvji.i. J. xvyxN Wings, and antennae. The eggs hatch in about 10 days, and the larval and pupal stage occupy from 4 to 6 weeks. There is much overlapping of generations, and it has been estimated that as many as twelve generations a year may be produced. The insects feed during all stages of the life cycle. The remedy and its application for the greenhouse thrip is the same as for the citrus thrip. 50. Orange Tortrlx.—The orange tortrix is a gray moth about i inch long. The larva burrows
 . Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 54 CITRUS FRTTTT.q TTMn^p tdot/-a -»--i-vxvxvji.i. J. xvyxN Wings, and antennae. The eggs hatch in about 10 days, and the larval and pupal stage occupy from 4 to 6 weeks. There is much overlapping of generations, and it has been estimated that as many as twelve generations a year may be produced. The insects feed during all stages of the life cycle. The remedy and its application for the greenhouse thrip is the same as for the citrus thrip. 50. Orange Tortrlx.—The orange tortrix is a gray moth about i inch long. The larva burrows https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cirtus-fruits-under-irragation-citrus-fruits-fruit-culture-54-citrus-frttttq-ttmnp-tdot-a-i-vxvxvjii-j-xvyxn-wings-and-antennae-the-eggs-hatch-in-about-10-days-and-the-larval-and-pupal-stage-occupy-from-4-to-6-weeks-there-is-much-overlapping-of-generations-and-it-has-been-estimated-that-as-many-as-twelve-generations-a-year-may-be-produced-the-insects-feed-during-all-stages-of-the-life-cycle-the-remedy-and-its-application-for-the-greenhouse-thrip-is-the-same-as-for-the-citrus-thrip-50-orange-tortrlxthe-orange-tortrix-is-a-gray-moth-about-i-inch-long-the-larva-burrows-image232765869.html
|
