This bat has a very small thumb enclosed by the wing membrane. It roosts in cave colonies and catches moths and other insects at night.
The upper fur is dark gray to slate blue, while the underside is lighter. The thumb is reduced and enclosed in the wing membrane.
It roosts in caves in groups and emerges after sunset to hunt insects. Moths were identified as its main food in a study of its droppings.
An extinction-risk assessment has not been added yet.