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Ticks. (A) Amblyomma americanum (female). (B) A. americanum (male). (C) Dermacentor variabilis (female). (D) D. variabilis (male). (E) Ixodes scapularis (female, dorsal). (F) I. scapularis (ventral). (G) Rhipicephalus sanguineus (female, dorsal). (H) R. sanguineus (ventral). (I) Ornithodoros turicata. AG, anal groove; BC, basis capituli; DS, dorsal shield; EY, eye; FS, festoons.
