Hypudaeus rufocanus Sundevall, 1846 p.122; Type locality- Lappmark, Sweden.
Evotomys (Craseomys) arsenjevi Dukelski, 1928 p.40; Type locality- Stekljannaja Padj (50 miles northeast Vladivostok), Siberia.
Clethrionomys rufocanus arsenjevi: Goodwin, 1933 p.12; Jones & Johnson, 1965 p.342.
Clethrionomys rufocanus: Jones & Johnson, 1965 p.372; Won, 1968 p.204; Corbet, 1978 p.99; Han, 1994 p.47; Won & Smith, 1999 p.25; Han, 2004c p.132.
Myodes rufocanus: Musser & Carleton, 2005 p.1026.
Range: In Korea, the grey red-backed vole has a range limited to the extreme northeastern area around Gaemagowon and further north of the plateau (Fig. 123).
Remarks: Specimens identified from China as Clethrionomys rufocanus regulus (Won 1968) belong to Craseomys rufocanus, since C. regulus is now considered to be endemic to the Korean Peninsula (Musser & Carleton 2005). Based on cytochrome b and a Y-linked gene (Sry), there are four lineages; 1) Primorsky, Russia and extreme northeastern Korea, 2) Kamchatka, 3) Sakhalin, and 4) Hokkaido (Iwasa et al. 2000).