This ground-dwelling rodent lives in the southern Andes and is the smallest member of its genus. It feeds on plants by day and uses burrows and surface runways in grassland and second-growth forest with southern beech and bamboo.
It is the smallest Aconaemys, with short, dark dorsal fur and a thin tail that is slightly bicolored.
It is a diurnal herbivore found in ungrazed bunchgrass and second-growth forest with southern beech and bamboo. It uses open burrows and runways and spends time above ground.
An extinction-risk assessment has not been added yet.