M. vison (Baker, 1904)

Ceratophyllus lucidus Baker, 1904: 388 . Ceratophyllus vison Baker, 1904: 388 . Monopsyllus vison; Jordan, 1933a: 78.

Distribution. Canada and USA.

Hosts. Blarina brevicauda talpoides . Other hosts. Carnivora: Martes americana, Mephitis m. mephitis, and Mustela frenata . Rodentia: Peromyscus maniculatus gracilis and Tamiasciurus hudsonicus (Holland, 1949; Traub et al., 1983; Ayala­Barajas et al., 1988).