M. asio (Baker, 1904)

Ceratophyllus asio Baker, 1904: 388 .

Megabothris asio; I. Fox, 1939: 47.

Trichopsylla (Trichopsylla) asio asio; Baker, 1946: 47.

Distribution. Canada and USA.

Hosts. Blarina brevicauda and Sorex cinereus . Other hosts. Carnivora: Mustela erminea and Vulpes vulpes . Lagomorpha: Sylvilagus floridanus . Rodentia: Clethrionomys gapperi, Microtus chrotorrhinus, M. pennsylvanicus, Synaptomys cooperi, Peromyscus maniculatus, and Zapus hudsonius (Benton & Kelly, 1975; Traub et al., 1983; Eckerlin & Painter, 2000; Whitaker, 2004).