Clethrionomys gapperi (Vigors, 1830)

Species diagnosis

General characteristics:

Rooted cheek teeth in adults
Lower molars with re-entrant angles little if any deeper on lingual side; rounded salient angles
Post-palatal bridge complete

Alaska subspecies

Subspecies	Type Locality
Clethrionomys gapperi phaeus (Swarth)	Marten Arm, Boca de Quadra
Clethrionomys gapperi solus Hall and Cockrum	Loring, Revillagigedo Island
Clethrionomys gapperi stikinensis Hall and Cockrum