N. genalis (Baker, 1904)
Typhlopsylla fraterna Baker, 1895: 189 (part).
Ctenophthalmus genalis Baker, 1904: 420 .
Nearctopsylla hygini laurentina Jordan & Rothschild, 1923: 315. Nearctopsylla genalis; I. Fox, 1940: 91.
Nearctopsylla genalis laurentina; Holland, 1949:104.
Distribution. Canada and USA.
Hosts. Blarina brevicauda, Sorex cinereus, S. c. miscix, and S. fumeus . Other hosts. Carnivora: Mustela frenata noveboracensis and Mustela sp. Insectivora ( Talpidae): Condylura cristata, Parascalops breweri, and Scalopus aquaticus . Rodentia: Clethrionomys gapperi and Synaptomys cooperi (Rapp Jr. & Gates, 1957; Hopkins & Rothschild, 1962; Miller & Benton 1973; Benton & Kelly, 1975; Benton, 1980; Owen, 1984; AyalaBarajas et al., 1988; Eckerlin & Painter, 2000; Whitaker, 2004).