This chipmunk occurs in mountains of the western United States. It has long, pointed ears and prefers montane coniferous forest.
It has long, pointed ears and three dark and four pale stripes on the back. Summer dorsal fur ranges from dark brown to chestnut shades among areas.
Its preferred habitat is montane coniferous forest. In Arizona, it is also recorded in pinyon, juniper, and scrub-oak habitat.
An extinction-risk assessment has not been added yet.