. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. Fig. 156. Spotted fever tick, Dermacentor venustus, male ($) and female (?). X 12.. Fig. 157. Development of spotted fever tick, Dermacentor venustus; A, eggs; B, larva; C, nymph. X 30. in the country where the ticks occur, especially squirrels of various kinds. Usually the larvae, and the nymphs also, attach themselves about the head and ears of their host. After a few days the larvae drop, transform into nymphs (Fig. 157C) and. Please note that these imag
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. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. Fig. 156. Spotted fever tick, Dermacentor venustus, male ($) and female (?). X 12.. Fig. 157. Development of spotted fever tick, Dermacentor venustus; A, eggs; B, larva; C, nymph. X 30. in the country where the ticks occur, especially squirrels of various kinds. Usually the larvae, and the nymphs also, attach themselves about the head and ears of their host. After a few days the larvae drop, transform into nymphs (Fig. 157C) and. 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.. Chandler, Asa C. (Asa Crawford), 1891-1958. New York, J. Wiley & Sons; London, Chapman & Hall