The bat is characterized by white stripes that run longitudinally down its back starting at the shoulders.

The lesser white-lined bat also has a characteristic odiferous gland on the distal portion of its arm.

[3] The lesser white-lined bat feeds primarily on aerial insects in the order Hymenoptera.

[5][6] The bats forage in areas under tree canopies and use echolocation to hunt the flying insects.

The bats don't change their calling frequency or their mouth size when using echolocation while hunting.