The small-toothed harvest mouse is a small rodent with reddish fur and a long tail. It is among the more arboreal members of its genus and inhabits cool, moist mountain forests.
The upperparts are deep reddish-fulvous, the tail is longer than the head and body, and the long dark ears are nearly naked. Dark rings mark the eyes.
It is among the more arboreal species in its genus and inhabits isolated patches of cool, moist high-mountain forest.
An extinction-risk assessment has not been added yet.