Wiktionary
southern vole
n. A species of vole, (taxlink Microtus rossiaemeridionalis species noshow=1)
Wikipedia
Southern vole
The southern vole (Microtus levis) is a species of vole ( rodent) in the family Cricetidae. It is found in Albania, Bulgaria, Finland, Greece, Iran, Svalbard (accidentally introduced), the Republic of Macedonia, Romania, Russia, Serbia and Montenegro, Slovakia, Turkey, Ukraine and Norway. On Svalbard they were first discovered in 1960 in the Grumantbyen area, and were thought to be the common vole until a genetic analysis correctly identified them in 1990.