Vespertilionidae - evening bats, vesper bats
 With 318 species, this is the largest family of bats. Most of the bats found in the united States are in this family. They are found around the world and live in a variety of habitats. The species in this family have small eyes, no noseleaf, and tails. Most of the species in this order eat insects and roost in caves, buildings, trees, or crevices.
 Endangered in N.H.
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 Threatened in N.H.
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 Introduced
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 Endangered in U.S.
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 Threatened in U.S.
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