Order Rodentia - Family Sciuridae 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 2 754 818 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Tamias (Neotamias) ruficaudus A. H. Howell 1920 Tamias (Neotamias) ruficaudus A. H. Howell 1920 , Proc. Biol. Soc. Wash., 33: 91 . Type Locality: "Upper St. Mary's Lake, [Glacier Co.,] Montana ." [ USA ]. Vernacular Names: Red-tailed Chipmunk . Subspecies: : Subspecies Tamias (Neotamias) ruficaudus subsp. ruficaudus A. H. Howell 1920 Subspecies Tamias (Neotamias) ruficaudus subsp. simulans A. H. Howell 1922 Distribution: NE Washington to W Montana ( USA ), and SE British Columbia ( Canada ). Conservation: IUCN – Lower Risk (lc). Discussion: Subgenus Neotamias . Patterson and Heaney (1987) presented both cranial and bacular data indicating that simulans may be specifically distinct from ruficaudus , but the nature of contact between the two forms is not known. Reviewed by Best (1993 b , Mammalian Species No. 452). Introgressive hybridization with T. amoenus reported in Good et al. (2003) .