Its coat varies between localities, and animals around La Puntilla have a dark stripe on the head. It lives in underground tunnels in sandy ground.
Animals around La Puntilla are slightly darker overall than those from Potrerillo and have a dark stripe on the head. Some also have a short black dorsal stripe at the base of the tail.
It digs and inhabits underground tunnels in sandy ground between La Puntilla and Tinogasta.
Among the animals examined, males tended to be larger than females.
Ventral hair tips also vary in colour: whitish in specimens from Antofagasta, intermediate between yellowish and whitish at Tinogasta, and pale yellowish at Chilecito.
An extinction-risk assessment has not been added yet.