Clethrionomys rutilus (Pallas, 1778). Nova Spec. Quad. Glir. Ord., p. 246.

REVIEWED BY: M. Andera (MA).

TYPE LOCALITY: U.S. S. R., R.S.F.S. R., center of Ob River delta.

DISTRIBUTION: N. Scandinavia east to Chukotka, south to N. Kazakhstan (U.S. S. R.), Mongolia, Transbaikalia, N. E. China, Sakhalin and Hokkaido; St. Lawrence Isl. (Bering Sea); Alaska east to Hudson Bay, south to N. British Columbia and Manitoba (Canada).

COMMENT: Revised by Hinton, 1926, Monograph of the voles and lemmings (Microtinae), Br. Mus. Nat. Hist., pp. 1 -488, Manning, 1956, Bull. Nat. Mus. Can., 144:1 -67, and Orr, 1945, J. Mammal., 26:67-74. Youngman, 1975, Mammals of the Yukon Terr., Nat. Mus. Can. Publ. Zool., 10:85, considered rutilus and gapperi conspecific; but also see Nadler et al., 1978, Can. J. Zool., 56(7): 1564-1575, and Hall, 1981:778-784, and comments under gapperi. Rossolimo, 1971, Byull. Mosk. Ova. Ispyt. Prir. Otd. Biol., 76:63-68, considered rjabovi to be a color mutant of rutilus, but Corbet, 1978:98, listed it as a subspecies.

ISIS NUMBER: 5301410008072005001.