Dicrostonyx vinogradovi Ognev, 1948 . Mammals of Eastern Europe and Northern Asia, 6:509.

TYPE LOCALITY: U.S. S. R., Wrangel Isl .

DISTRIBUTION: Known only from the type locality.

COMMENT: Formerly included in torquatus; karyological and morphological analyses, and experimental breeding indicated species distinction; see Chernyavskii and Kozlovskii, 1980, Zool. Zh., 59(2):266-273. The diploid number is 28 and the fundamental number is 54. See also Rausch, 1977, in Sokolov, ed., [Adv. Mod. Theriol.], Acad. Sci. U.S. S. R., Nauka, Moscow, pp. 162- 177.