This small rodent occurs in moist lowland and foothill forests of the Guianan region. Head-and-body length is reported as about 64–85 mm; records from nearby northeastern Brazil remain uncertain.
Head-and-body length is about 64–85 mm and tail length about 67–81 mm; the tail can be bicolored.
It is recorded in moist broadleaf forest from lowlands into foothills.
An extinction-risk assessment has not been added yet.