A nocturnal squirrel that glides from tree to tree using a skin membrane between its limbs.
Its back is tan or brown and its belly is white.
In 2024, researchers set a camera in Sierra Gorda Biosphere Reserve, central Mexico, after residents described a squirrel gliding between trees at night. From July to November, it faced a cavity about 3.5 m high in an oak tree, providing 130 camera-trap days.
All 19 squirrel records at the cavity were nocturnal, between 7 p.m. and 5 a.m. Mice, another squirrel, and birds also used it. This first confirmed Guanajuato record was 52 km northwest of the nearest known locality. The authors recommend retaining cavity-bearing trees and continuing camera monitoring. One site cannot establish population size.
An extinction-risk assessment has not been added yet.
A 2024 camera study in Sierra Gorda recorded a southern flying squirrel and several other kinds of wildlife using one oak cavity. The authors recommend retaining cavity-bearing trees and continuing non-invasive monitoring. This is useful local habitat information, but it does not measure abundance or determine a formal conservation category for the species as a whole.