{"references": ["Hoffmeister, D. F. 1951. A taxonomic and evolutionary study of the pinon mouse, Peromyscus truei. Illinois Biological Monographs, 21: 1 - 104.", "Lee, M. R., D. J. Schmidly, and C. C. Huheey. 1972. Chromosomal variation in certain populations of Peromyscus boylii and its systematic implications. Journal of Mammalogy, 53: 697 - 707.", "Zimmerman, E. G., C. W. Kilpatrick, and B. J. Hart. 1978. The genetics of speciation in the rodent genus Peromyscus. Evolution, 32: 565 - 579.", "Modi, W. S., and M. R. Lee. 1984. Systematic implication of chromosomal banding analyses of populations of Peromyscus truei (Rodentia, Muridae). Proceedings of the Biological Society of Washington, 97: 716 - 723.", "Janecek, L. L. 1990. Genic variation in the Peromyscus truei group (Rodentia: Cricetidae). Journal of Mammalogy, 71: 301 - 308."]}

Peromyscus gratus Merriam, 1898. Proc. Biol. Soc. Washington, 12:123. TYPE LOCALITY: Mexico, Distrito Federal, Tlalpan. DISTRIBUTION: SW New Mexico, USA, south from W Chihuahua and SE Coahuila, through interior Mexico to C Oaxaca. SYNONYMS: erasmus, gentilis, pavidus, zapotecae, zelotes. COMMENTS: Mexican populations revised, as part of P. truei, by Hoffmeister (1951). Divergent karyotypes and genetic distances had questioned unity of P. truei (Lee et al., 1972; Zimmerman et al., 1978); sympatry documented in New Mexico by Modi and Lee (1984), who raised P. gratus to a species (also see Janecek, 1990). P. truei species group.

Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 731, DOI: 10.5281/zenodo.7353098