Peromyscus boylii

Peromyscus schmidlyi of western Mexico formerly was included in P. boylii; it was described as a distinct species by Bradley et al. (2004). Peromyscus attwateri, P. aztecus, P. baetae, P. levipes, P. madrensis, P. sagax, P. simulus, and P. spicilegus formerly were included in P. boylii; Musser and Carleton (in Wilson and Reeder 2005) cited pertinent studies in recognizing these taxa as distinct species. Peromyscus stephani was included in Peromyscus boylii by Hafner et al. (2001), but Musser and Carleton (in Wilson and Reeder 2005) cited other studies in maintaining P. stephani as a distinct species.

Some taxa previously included as subspecies of P. boylii are now included in other species (e.g., cordillerae and evides in P. aztecas; ambiguus in P. levipes; sacarensis in P. baetae, and penicillatus in P. nasutus (see Musser and Carleton, in Wilson and Reeder 2005).

Northern California, southern Nevada, northern Utah, southwestern and southeastern Colorado, and western Oklahoma and northern Texas south through California, Arizona, New Mexico, and western Texas to northern Baja California and through the Sierra Madre Occidental and adjacent Mexican Plateau to Queretaro and western Hidalgo (Musser and Carleton, in Wilson and Reeder 2005). Populations in the Sierra Madre Occidental of Durango, eastern Sinaloa, and possibly northern Nayarit are now recgonized as a distinct species, P. schmidlyi (Bradley et al. 2004).