The Amblyomma (Acarina: Ixodidae) Parasitic on Giant Tortoises (Reptilia: Testudinidae) of the Galápagos Islands1

Abstract
Study of ticks from giant tortoises, Geochelone elephantopus subspp., in the Galápagos Islands reveals 3 Amblyomma species parasitizing this host: A. usingeri, n. sp., A. macfarlandi, n. sp., and A. pilosum Neumann. Each active stage in the life cycle of these species is described and illustrated. Amblyomma boulengeri Hirst & Hirst, previously incorrectly considered to be synonymous with A. pilosum (sensu Robinson), is a distinct species parasitic on land iguanas and lava lizards.

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