The black-footed colilargo is a small rodent with a tail longer than its head and body combined and relatively short, broad hind feet. A southern Brazilian forest study found it associated with dense scrub.
It is small, with a tail longer than the combined head and body length and relatively short, broad hind feet. Similar species can make field identification from appearance alone uncertain.
In a southern Brazilian deciduous Atlantic Forest study, it was associated with dense scrub, which the authors interpreted as opportunistic habitat use.
An extinction-risk assessment has not been added yet.