The Distribution in Oregon of Ixodes Pacificus, Dermacentor Andersoni, and Dermacentor Occidentalis with a Note on Dermacentor Variabilis (Acarina: Ixodidae)

Abstract
Numerous tick collections from areas throughout Oregon between 1967 and 1975 have clarified the distribution of 3 man-biting species, Ixodes pacificus, Dermacentor andersoni , and D. occidentalis . Additional unpublished Oregon records at the Rocky Mountain Laboratory are included (a total of 11,839 ticks) to give full county (spatial) and monthly (temporal) species distributions. A possible new focus of D. variabilis is also included.