Family Bittacidae is a taxonomic family of insects commonly known as hangingflies. Hangingflies are elongate, slender-bodied insects that hang upside down from vegetation, with their wings held tent-like above their bodies. Hangingflies are predators, feeding on a variety of insects, including flies, mosquitoes, and other small arthropods. Synonyms for the Family Bittacidae include the families Boreidae, Meropeidae, and Panorpidae, which were formerly considered separate families but are now recognized as being part of the same family. Despite their unusual appearance and predatory lifestyle, hangingflies play an important role in many ecosystems as both predators and prey.