Southern red-backed vole
（重定向自Clethrionomys gapperi）
The southern red-backed vole or Gapper's red-backed vole (Myodes gapperi) is a small slender vole found in Canada and the northern United States. It is closely related to the western red-backed vole (Myodes californius), which lives to the south and west of its range and which is less red with a less sharply bicolored tail.