Catamarca Tuco-tuco is recorded in Catamarca and La Rioja provinces of northwestern Argentina. The available account gives more detail about its coat than its way of life.
The back is dark brown, the flanks and thighs buffy, and the belly ochre-colored. The muzzle, sides of the mouth, and chin tip are described as blackish.
Ecological data are scarce. The collector reported finding it on stony ground; the account does not describe its activity time or diet.
An extinction-risk assessment has not been added yet.