The Siberut flying squirrel occurs in Indonesia's Mentawai Islands. A genus-level account describes Petinomys squirrels as gliding between trees and feeding on fruit and seeds at night.
The Animal Diversity Web describes Petinomys squirrels as having darker backs, lighter undersides, eye rings and a gliding membrane between the limbs.
The genus account describes Petinomys as nocturnal, feeding on fruit and seeds in the canopy and resting in tree cavities by day.
An extinction-risk assessment has not been added yet.