The Puno Akodont is a small mouse with an olive to gray-brown back streaked with black. It lives on high-elevation puna grasslands, forages on the ground, and feeds mostly on arthropods.
Its back is olive to gray-brown with black hairs, and its underside is paler. Many specimens have a small white chin patch, and the tail is sharply darker above than below.
It lives in puna grasslands at 1,900 m and above and is terrestrial. Arthropods make up most of its diet, with plant material and mycorrhizal spores also reported.
An extinction-risk assessment has not been added yet.