Order Rodentia - Family Cricetidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 955 1189 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Reithrodontomys (Reithrodontomys) montanus (Baird 1855) [Reithrodon] montanus Baird 1855 , Proc. Acad. Nat. Sci. Philadelphia , 7: 335 . Type Locality: USA , Colorado , Saguache Co., upper part of the San Luis Valley (as restricted by Allen, 1895:125; also see Armstrong’s, 1972:190, lucid summary of the contradictory references to the type locality). Vernacular Names: Plains Harvest Mouse . Synonyms: Reithrodontomys (Reithrodontomys) albescens Cary 1903 ; Reithrodontomys (Reithrodontomys) griseus Bailey 1905 . Distribution: High Plains of C USA , from W South Dakota and E Wyoming to EC Texas and extreme SE Arizona ; NE Sonora and Chihuahua to N Durango , México . Conservation: IUCN – Lower Risk (lc). Discussion: Subgenus Reithrodontomys , megalotis species group. Multivariate discrimination from R. megalotis in Kansas demonstrated by Hoofer et al. (1999) . New records on Edwards Plateau, EC Texas , documented by Goetze et al. (1993) . See Wilkins (1986 , Mammalian Species, 257).