Bittacidae
Guides
Apterobittacus
Apterobittacus is a genus of hangingflies in the family Bittacidae, established by MacLachlan in 1893. The genus contains a single described species, A. apterus. Hangingflies (Bittacidae) are predatory insects characterized by their habit of hanging from vegetation using their forelegs while capturing prey with their mid- and hind legs. The genus name "Apterobittacus" references the reduced or absent wings ("apterus" = wingless) that distinguishes this group from other bittacids.
Apterobittacus apterus
Apterobittacus apterus is a wingless species of hangingfly (family Bittacidae) in the order Mecoptera. First described by MacLachlan in 1871, it is the type species of the genus Apterobittacus. Unlike most bittacids, which possess two pairs of wings and are capable of flight, A. apterus is completely apterous (wingless). This species is endemic to North America and represents an unusual evolutionary trajectory within the Mecoptera, where wing reduction is rare. The genus name directly references this wingless condition.
Bittacus stigmaterus
Say's Hanging-fly
Bittacus stigmaterus is a North American hangingfly in the family Bittacidae, commonly known as Say's Hanging-fly. The species exhibits elaborate courtship behavior in which males capture arthropod prey and present them to females as nuptial gifts. Females exercise mate choice based on prey size, with larger gifts increasing male mating success. Males also engage in kleptoparasitism, stealing prey gifts from rival males.
Bittacus texanus
Texas hangingfly
Bittacus texanus is a species of hangingfly in the family Bittacidae, described by Banks in 1908. Like other members of its family, this insect is characterized by its distinctive hanging posture, grasping the substrate with its front legs while the remaining four legs dangle freely. The species is found in North America, with records from both the United States and Mexico. Hangingflies are predatory insects related to scorpionflies, representing an ancient lineage of holometabolous insects.
Mecoptera
Scorpionflies, Hangingflies, Snow scorpionflies
Mecoptera is a small order of holometabolous insects comprising approximately 600 extant species in nine families worldwide. The group includes scorpionflies (Panorpidae), hangingflies (Bittacidae), and snow scorpionflies (Boreidae). Males of the largest family, Panorpidae, possess enlarged genital structures that resemble scorpion stingers, giving the group its common name. The order exhibits close phylogenetic relationships with Siphonaptera (fleas) and Diptera (true flies), with some studies suggesting fleas may be derived from within Mecoptera, rendering the order potentially paraphyletic. Modern mecopterans are primarily found in moist environments, though the Boreidae are adapted to cold montane regions where adults walk on snowfields.