This mouse occurs in the mountains of northwestern Argentina. It has a white chin spot and a two-colored tail.
The back is dark olive-brown and the belly is dark gray-brown. It has a white chin spot, and the tail is black above and white below.
SIB says it is common in the mountains of Jujuy up to 2,500 m and reports episodes of population increase.
An extinction-risk assessment has not been added yet.