A high-Andean rodent recorded in western Argentina and adjacent Chile, usually above 1,700 m. Habitat details come from a small number of collection sites.
Its fur is long, thick, and dull gray, with a paler underside containing cream-buff hairs. The thick grayish-white tail has a faint darker line along the top.
Specimens in Malleco, Chile, were collected in ñirre woodland grassland at 1,740 m. In Neuquén, Argentina, the account records wet alpine meadow with runways and tunnels in deep soil.
An extinction-risk assessment has not been added yet.