Spermophilus annulatus subsp. annulatus Audubon and Bachman 1842

Spermophilus annulatus subsp. annulatus Audubon and Bachman 1842, J. Acad. Nat. Sci. Philadelphia, 8: 319.

Type Locality: "Western prairies." Restricted by A. H. Howell (1938:163) to Manzanillo, Colima, Mexico.