Spermophilus (Callospermophilus) madrensis Merriam 1901

Spermophilus (Callospermophilus) madrensis Merriam 1901, Proc. Wash. Acad. Sci., 3: 563.

Type Locality: "from Sierra Madre, near Guadalupe y Calvo, Chihuahua, Mexico (7,000 feet [2134 m] altitude)." .

Vernacular Names: Sierra Madre Ground Squirrel.

Distribution: SW Chihuahua (Mexico).

Conservation: IUCN – Lower Risk (nt).

Discussion: Subgenus Callospermophilus (Hall, 1981:410) . Gromov et al. (1965:150) considered Callospermophilus a subgenus of the genus Otospermophilus . S. madrensis and S. lateralis are sister species (Harrison et al., 2003). Reviewed by Best and Thomas (1991 b, Mammalian Species No. 378).