Spermophilus (Otospermophilus) atricapillus W. Bryant 1889
Spermophilus (Otospermophilus) atricapillus W. Bryant 1889, Proc. California Acad. Sci., ser. 2, 2: 26.
Type Locality: "Comondu, Lower California" [Baja California Sur, Mexico].
Vernacular Names: Baja California Rock Squirrel.
Distribution: Baja California (Mexico).
Conservation: IUCN – Lower Risk (lc).
Discussion: Subgenus Otospermophilus (Hall, 1981:402) . Sister species to beecheyi (Harrison et al., 2003) . Reviewed by Alvarez-Casteñeda et al. (1996, Mammalian Species No. 521).