The Mexican long-tongued bat has gray to gray-brown fur, a long nose and nose leaf, small ears, and a broad tail membrane. It is found in desert habitats from the very southern ranges of California, Arizona, New Mexico, and Texas south throughout Mexico. It migrates and the majority of individuals found in the US part of its range were females during the maternity season (May-November). This bat feeds on the nectar of columnar cacti and has also been seen draining hummingbird feeders. Not much is known about the life history of this species.