The red-backed voles are the members of the genus Myodes, a group of small slender voles found in North America, Europe and Asia. The genus name comes from the Greek "keyhole mouse". In the past, the genus has been called Evotomys or Clethrionomys, but Myodes takes precedence.
They inhabit northern forests, tundra and bogs. These animals feed on shrubs, berries and roots. Most species have reddish brown fur on their back. They have small eyes and ears. Unlike other voles, the molar teeth are rooted in adults.
The complete list of species is: