. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. TICK BITES 357 lairs or abodes of their hosts. The Ixodidse, on the other hand, inhabit the hosts rather than their lairs, and frequently remain attached for several days, or even longer. In the less capacious Argasidse the females lay their eggs in a number of installments. Fig. 154. Comparison of dorsal and ventral view of Ixodid and Argasid females; A, dorsal view of Ixodid 9 ; A', ventral view of same; B, dorsal view of Argasid 9 ; B', ventral view of same. An., anus; cap., capituium; d. sh., dorsal
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. TICK BITES 357 lairs or abodes of their hosts. The Ixodidse, on the other hand, inhabit the hosts rather than their lairs, and frequently remain attached for several days, or even longer. In the less capacious Argasidse the females lay their eggs in a number of installments. Fig. 154. Comparison of dorsal and ventral view of Ixodid and Argasid females; A, dorsal view of Ixodid 9 ; A', ventral view of same; B, dorsal view of Argasid 9 ; B', ventral view of same. An., anus; cap., capituium; d. sh., dorsal shield; , eye spot; gen. op., genital opening; sp., spiracle. after successive feeds, and the total number of eggs may be counted in hundreds instead of thousands. The reason for this difference is readily accounted for by the difference in habits in the two famihes, since the progeny of the Argasidse, reared in the lairs of the hosts, have far better chances of finding a host and of surviving than do the progeny of the Ixodidse which live on their hosts and may drop off to lay their eggs almost anywhere in the wanderings of the host. Tick Bites. — The status of ticks as human parasites, as stated before, is one not to be passed over lightly. Aside from 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 Chandler, Asa Crawford, 1891-. New York, J. Wiley
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