The Mamore arboreal rice rat is an arboreal rodent recorded from forests spanning eastern Bolivia to central-western Brazil. It eats fruit and preys on small seeds.
Its back is grayish brown flecked with black and its belly is cream-colored. The dorsal fur is generally over 5 mm long; the brown tail has only a slight terminal tuft.
It is arboreal and frugivorous, and also preys on small seeds. The review notes that the species group may be taxonomically complex.
An extinction-risk assessment has not been added yet.