It has soft, dark brown fur with a blackish middle back. Its tail is longer than the head and body and dark brown above and below.
The fur is soft and fine. The back is dark yellowish brown, blacker along the middle, and the underside is greyish white to grey with grey-based hairs.
Along the Rio Juruá in western Brazil, it has been collected on the ground in heavily disturbed secondary growth.
The tail hairs are short, leaving fine rows of scales visible, and there is no tuft at the tip.
The ears are small for the animal’s size and rounded in shape.
An extinction-risk assessment has not been added yet.