The Collared Tuco-tuco is a subterranean rodent of lowlands from central Uruguay to southern Brazil. Coat colors vary by locality, including brown, gray, white-marked, and melanistic forms.
Its coat is variable: reported forms include brown, gray, brown with white areas, and locally melanistic individuals.
It lives in lowland grasslands and gallery forests. The paper treats tuco-tucos as subterranean rodents, and this species is part of that underground-dwelling group.
An extinction-risk assessment has not been added yet.