{"references": ["Hall, E. R. 1981. The mammals of North America. Second ed. John Wiley and Sons, New York, 1: 1 - 600 + 90, 2: 601 - 1181 + 90.", "Gromov, I. M., D. I. Bibikov, N. I. Kalabukhov, and M. N. N. Meier. 1965. Fauna SSSR, Mlekopitayushchie, tom. 3, vyp. 2 [Fauna of the U. S. S. R. Mammals. vol. 3, No. 2]. Nazemnye belich'e [Ground Squirrels]. Nauka, Moscow-Leningrad, 467 pp. (in Russian).", "Cothran, E. G., E. G. Zimmerman, and C. F. Nadler. 1977. Genic differentiation and evolution in the ground squirrel subgenus Ictidomys. Journal of Mammalogy, 58: 610 - 622."]}

Spermophilus mexicanus (Erxleben, 1777). Syst. Regn. Anim., 1:428. TYPE LOCALITY: Mexico, Toluca. DISTRIBUTION: S. New Mexico and W. Texas (U.S.A.) to Jalisco and S. Puebla (C. Mexico). COMMENT: Subgenus Ictidomys; see Hall, 1981:394. Gromov et al., 1965:153, considered Ictidomys a distinct genus. Known to hybridize at several localities with tridecemlineatus; see Cothran et al., 1977, J. Mammal., 58:610-622. ISIS NUMBER: 5301410002032015001.

Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 1), pp. 345-382 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 369, DOI: 10.5281/zenodo.7353023