Genus: Microtus

Systematics :

KingdomAnimals (Animalia)
Phylum Ryggstrengdyr (Chordata)
Subphylum  Virveldyr (Vertebrata)
Klasse   Pattedyr (Mammalia)
Order    Gnagere (Rodentia)
Suborder     Smågnagere (Myomorpha)
Family      Hamsterfamilien (Cricetidae)
Genus       Microtus
Species        Tundra vole (Microtus oeconomus)
Species        Field vole (Microtus agrestis)