Range As indicated by its common name, this species has the longest ears of any myotis found in New Mexico. As compared with the southwestern myotis, the long-ear ed myotis has black ears rather than brown, wing membranes black rather than brown, and ears average longer than those of the southwestern myotis. The long ears are thought to be adapted for insects which are not flying, but are sitting on leaves of bushes. This is called gleaning and these bats feed principall y on moths, flies, spiders, and beetles. Bats that are adapted for gleaning are capable of flying through very dense vegetation, and therefore are relativel y slow moving, very maneuverable bats.
Roosts are in trees, cabins, caves, abandoned mines, and other such sheltered areas.
Where this species hibernates is unknown. The long-eared myotis emerge s after dark to forage, feeding near trees or over water. Females of this species form small maternity colonies of from one to three dozens individuals. Mu ch of the information on reproduction is anecdotal since no detailed study has been done. In new Mexico, no pregnant females have been found, but both lacta ting females and young of the year were found at the end of July.