This myotis has a bare patch between the shoulder blades and mainly roosts in caves. Females give birth to one young per year.
A conspicuous bare patch lies on the back between the shoulder blades. The Texas account gives a forearm length of 37–47 mm.
In Texas, females are reported to give birth to one young in late April or May. Caves are the main roosts, although mines and some buildings are also used.
An extinction-risk assessment has not been added yet.