Since all four subfamilies are in the family Vespertilionidae, they share some features, including a well-developed tragus that reaches up from the base of the ear, a nearly naked patag-ium, or flight membrane, that covers a relatively long tail, and
the lack of the fleshy nose ornament common to so many other bat families. Unlike other vespertilionids, however, species in the subfamily Murininae have nostrils appearing at the end of tube-shaped nose. Tomopeas lacks the anterior basal earlobe present in the other subfamilies. Miniopterines have an extremely long third finger that they can fold, earning them the moniker bent-wing bats. Members of the subfamily Kerivouli-nae all share a long, slender, pointed tragus.
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