It is covered with soft fur on the body, greyish to dark brown in colour, but not on its face, rear abdomen and rump.

The large rhomboid-shaped ears have transverse ridges across the pinna and are connected across the forehead with well developed tragi.

This includes dry scrub, rocky areas, caves, deserted monuments, abandoned buildings, wells and other underground features.

[1] Lesser mouse-tailed bats are insectivorous, feeding primarily on beetles, neuropterans and moths, many of which are considered pests by humans.

[2] They accumulate fat in a fold of skin in the lower abdomen, which allows them to survive the winter when insect availability is low.

[4] Though the bats are active throughout the year, they survive the winter months, when insect availability is low, by remaining in a torpor.

[4] Lesser mouse-tailed bats hunt for insects at heights ranging from 5 to 10 meters off the ground,[2] often being mistaken for birds due to their pattern of swooping and gliding.

[4][6] While landing or flying around in groups around the roost-site, lesser mouse-tailed bats emit frequency modulated (FM) sounds of 3 ms duration.