A description summarized in a 2012 taxonomic paper lists a reddish-brown back, pale-red underside, and short-haired tail for Brazilian Tuco-tuco. In his 1845 book, Darwin used the name Ctenomys brasiliensis for a tuco-tuco at Maldonado and described underground burrows, nocturnal habits, and plant-root feeding.
A 2012 taxonomic paper summarizes a description attributed to Moojen (1952): reddish-brown upperparts, a pale-red underside, and a tail covered with short hairs.
Darwin reported that the tuco-tuco he called this species at Maldonado dug underground burrows, was nocturnal, and fed mainly on plant roots.
An extinction-risk assessment has not been added yet.