Mexican Vole – Microtus mexicanus

Microtus mexicanusSaussure, 1861

Accepted name,

Interspecific affinities unclear: affiliated with Microtus sensu stricto, in particular M. californicus (Anderson, 1959, 1960; Conroy and Cook, 2000a; Conroy et al., 2001) or M. montanus and M. pennsylvanicus (Moore and Janecek, 1990); associated with the subgenus Pitymys by Hooper and Hart (1962); chromosomal banding data uninformative (Modi, 1987); also see Hoffmann and Koeppl (1985). Morphometric, electrophoretic, and karyotypic variation among isolated populations in SW USA studied by Wilhelm (1982); nongeographic variation of US and Mexican populations evaluated by Frey and Moore (1990); geographic variation of populations in C México assessed by Alvarez and Hernández-Chávez (1993), who considered the regional subspecies as valid (fundatus, mexicanus, and salvus) and described a new one (ocotensis).Critical overhaul of the mexicanus complex is needed. Musser (1964) re... [truncated]