Pteromys volans (Linnaeus, 1758) . Syst. Nat., 10th ed., 1:64.

TYPE LOCALITY: "in borealibus Europae, Asiae, et Americae." Restricted by Thomas (1911a: 149) to " Finland." Ognev (1966:268) proposed restriction to "central Sweden," but the species does not occur there (Sulkava, 1978:76) .

DISTRIBUTION: Palearctic taiga, from N Finland east to Chukotka (Russia); south to E Baltic shore; S Ural Mtns, Altai Mtns (Russia), Mongolia; N China; Korea; Sakhalin Isl (Russia), and Hokkaido (Japan); perhaps mtns of W China.

SYNONYMS: aluco (Thomas, 1907); anadyrensis Ognev, 1940; arsenjevi Ognev, 1935; athene (Thomas, 1907); betulinus Serebrennikov, 1930; buechneri Satunin, 1903; gubari Ognev, 1935; incanus Miller, 1918; ognevi Stroganov, 1936; orii (Kuroda, 1921); russicus Tiedemann, 1808; sibiricus Desmarest, 1922; turovi Ognev, 1919; vulgaris Wagner, 1842; wulungshanensis (Mori, 1939).

COMMENTS: Chromosomes described by Rausch and Rausch (1982).