This dark squirrel is found only on the Mentawai Islands. It is active by day, mostly in trees, and eats fruit and young leaves.
Its body is dark, with faint lighter stripes on the sides. Coat color varies among subspecies.
It is diurnal and mainly arboreal, though it sometimes comes to the ground. Its foods include fruits, young leaves, bark, and arthropods.
An extinction-risk assessment has not been added yet.