Evening bats can sometimes be mistaken for juvenile big brown bats due to their smaller size but otherwise similar appearance, particularly the broad muzzle and rounded ears. The species' fur is dark brown at the base with grayish-brown tips and is typically lighter on the belly. They live in deciduous forests throughout the Southeast and Midwest, roosting in trees and buildings. Evening bats migrate south in the winter, and one banded individual was sighted 340 miles from it's summer capture location. The species' diet consists primarily of beetles but can also include flying ants, stink bugs, and moths. Females typically have twins. Evening bats have a relatively short lifespan of ~4-6 years.