Microtus chrotorrhinus Miller 1894

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore: The Johns Hopkins University Press, pp. 955-1189 : 995

Microtus chrotorrhinus Miller 1894

Microtus chrotorrhinus Miller 1894 , Proc. Boston Soc. Nat. Hist., 26: 190.

Type Locality: USA, New Hampshire, Coos Co., Mt Washington, head of Tuckerman's Ravine, 5300 ft (1615 m).

Vernacular Names: Rock Vole.

Synonyms: Microtus carolinensis Komarek 1932 ; Microtus ravus Bangs 1898 .

Distribution: S Labrador south through S Quebec and Ontario, Canada, to NE Minnesota, N New York, and N New England states, USA; isolated segments in the C (S New York, NE Pennsylvania) and S Appalachian Mtns (W Maryland to E Tennessee and W North Carolina).

Conservation: IUCN – Data Deficient as M. c. ravus , Lower Risk (nt) as M. c. carolinensis , otherwise Lower Risk (lc).

Discussion: Although conventionally viewed as closely related to ( Anderson, 1960), if not conspecific with ( Hall and Kelson, 1959), M. xanthognathus , morphological, chromosomal, and molecular information reveals their more distant kinship ( Bailey, 1900; Conroy and Cook, 2000 a; Guilday, 1982; R. A. Martin, 1973, 1979; Rausch and Rausch, 1974). The expanded definition of the subgenus Aulacomys (= M. chrotorrhinus , M. longicaudus , M. richardsoni , M. xanthognathus ) as conceived by Zagorodnyuk (1990) is decidedly polyphyletic on parsimony and likelihood trees generated from mitochondrial DNA sequences ( Conroy and Cook, 2000 a). Genic variation evaluated by Kilpatrick and Crowell (1985). See Kirkland and Jannett (1982, Mammalian Species, 180).