The lesser Chiruromys is a small tree-dwelling rat of New Guinea's tropical forests. Its long tail can grasp branches, and it uses tree hollows as nest sites.
Its back is orange to reddish with black flecks, its underside is pale, and its long prehensile tail can grasp branches.
It is arboreal, eats fruit and leaves, and nests in tree hollows. The account also reports communal nesting.
An extinction-risk assessment has not been added yet.