A 2014 study supported treating this former subspecies of Myotis keaysi as a distinct species. Its coat is buffy-brown, with hair on the hind feet and uropatagium.
The 2014 comparison describes the former subspecies as paler buffy-brown and shorter-haired than M. keaysi, with hair on the hind feet and uropatagium.
An acoustic survey in and around Lagos de Montebello National Park, Chiapas, Mexico, recorded calls assigned to this species. Relative activity was reported as higher at water-filled sinkholes and flooded sites than at forested sites.
An extinction-risk assessment has not been added yet.