Microtus mujanensis Orlov and Kovalskaya, 1978 . Zool. Zh., 57:1224.

TYPE LOCALITY: Russia, Buryat, Bauntovski Oblast, Vitim River Basin, Muya Valley .

DISTRIBUTION: Known only from the type locality.

COMMENTS: Subgenus Alexandromys, maximowiczii species group sensu Zagorodnyuk (1990) . The species group also embraces M. evoronensis, which reflects Meier's (1983) interpretation of propinquity among the three species.