Zapus Coues 1875

Zapus Coues 1875, Bull. U. S. Geol. Geogr. Surv. Terr., ser. 2, 5 (3): 253.

Type Species: Dipus hudsonius Zimmermann 1780

Species and subspecies: 3 species:

Species Zapus hudsonius (Zimmermann 1780)

Species Zapus princeps Allen 1893

Species Zapus trinotatus Rhoads 1894

Discussion: Revised by Preble (1899) and Krutzsch (1954). Myology, in context of adaptive and phylogenetic significance, studied by Klingener (1964). Dental evolution investigated by Klingener (1963). For verification of the absence of cheek pouches in Zapus see Klingener (1971). Phallic morphology described by Shenbrot (1992). Evolutionary history extends back to late Pliocene in North America (Klingener, 1963; R. A. Martin, 1994).