This olive-brown mouse is known from only four sites within a national park in eastern Bolivia. Stomach samples from captured specimens included ants and insect larvae.
The upper coat looks olivaceous, with yellow- and black-tipped hairs. The underside is gray-based with a buff tinge, and the tail is covered in stiff hairs that are paler below.
At the type locality it was captured in wet open savanna with scattered short trees at 700 m; other specimens came from well-drained grassland at 200 m. Stomach contents included adult ants, insect larvae, and small amounts of plant tissue.
An extinction-risk assessment has not been added yet.