A highly species-rich genus within the microbat family, commonly known as mouse-eared bats
Mouse-eared bats are largely insectivores (insect eaters). But several member species with relatively large feet and long toes have also been known to feed on small fish from near the water surface and insects.
The species within this genus vary in size greatly and have a single pair of mammary glands. These bats usually reside in pastures, forest edges, and open deciduous forests. This genus is also known for its particularly long age, with 13 species known to live more than 20 years and four species that can live to more than 30 years.