Tipulidae

Large Crane Flies, Crane Flies

Subfamily Guides

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is a large of true flies in the order Diptera, comprising over 4,200 described in more than 30 . Members are commonly known as crane flies or large crane flies, characterized by their elongated bodies and exceptionally long, slender legs. are typically short-lived and often do not feed; their primary purpose is . Larvae occupy diverse moist including soil, leaf litter, decaying wood, and aquatic environments, where most feed on decaying organic matter. The family has a fossil record extending to the Late Jurassic.

Tipula caloptera by (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block. Used under a CC-BY license.Nephrotoma suturalis by (c) Arturo Santos, some rights reserved (CC BY), uploaded by Arturo Santos. Used under a CC-BY license.Nephrotoma virescens by (c) skitterbug, some rights reserved (CC BY), uploaded by skitterbug. Used under a CC-BY license.

Pronunciation

How to pronounce Tipulidae: /tɪˈpjuːlɪdiː/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

can be distinguished from other crane fly by the structure of the maxillary palps: the fourth segment (furthest from the body) is longer than the other three segments combined. typically have 13 segments, compared to 14 or 16 in Limoniidae. These features help separate true crane flies from the numerous related families formerly classified as of Tipulidae.

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Habitat

Larvae occur in moist terrestrial and aquatic environments including soil, leaf litter, moss, decaying wood, fungi, and freshwater . Some have adapted to extreme environments including caves, marine intertidal zones, and deserts, though the majority inhabit humid forests and wetlands. are aerial and found in diverse terrestrial habitats, often near larval development sites.

Distribution

Worldwide distribution across all continents except Antarctica. Particularly diverse in temperate and tropical regions.

Seasonality

timing varies by and latitude. Many temperate species emerge in spring and early summer. Some species are attracted to lights at night.

Diet

Larvae are primarily saprophagous, feeding on microbe-rich decaying plant material in moist environments. Some are predacious, fungivorous, or phytophagous; a minority feed on living plant roots. generally do not feed, or feed only sparingly on liquids such as dew, honey water, or nectar; some species have independently evolved long mouthparts for nectar feeding.

Life Cycle

Complete with , larva, pupa, and stages. Larval development is the life stage, often requiring one or more years. Pupae have a leathery appearance, giving rise to the colloquial name "leatherjackets" for larvae of some pest . Adults are short-lived, typically surviving only days to weeks, with lifespan sufficient primarily for mating and .

Behavior

form mating swarms, with some exhibiting all-male swarms that attract females. Males of other species fly with forelegs outstretched, presumably using contact to locate females. Some tropical species aggregate in dark areas, flying together at constant levels and re-aggregating after disturbance. Adults are fragile and easily lose legs when handled. Some species are attracted to artificial lights at night.

Ecological Role

Larvae function as decomposers in terrestrial and aquatic through saprophagy, contributing to nutrient cycling. They serve as important food sources for various including birds, small mammals, and other insects. Some are significant pests of turfgrass and agricultural crops due to root-feeding larval damage.

Human Relevance

are frequently mistaken for giant mosquitoes and colloquially called "mosquito hawks," though they do not prey on mosquitoes or bite humans. They are harmless to humans and pets. Some are economically important as pests of turfgrass, golf courses, lawns, athletic fields, and agricultural crops, particularly European crane flies in North America. The has been extensively studied by entomologists, with Charles Paul Alexander describing over 11,000 species during his career.

Similar Taxa

  • LimoniidaeFormerly classified as a of ; distinguished by 14-16 antennal segments versus 13 in Tipulidae, and by maxillary palp structure (fourth segment not longer than other three combined).
  • PediciidaeFormerly included in ; now recognized as a separate based on phylogenetic evidence, distinguished by hairy and other morphological features.
  • Culicidae (mosquitoes)Superficially similar appearance with long legs and narrow body, but mosquitoes have scaled wings, for blood-feeding in females, and shorter with segments in males.

Misconceptions

Crane flies are commonly but incorrectly believed to be of mosquitoes or to bite/sting humans. They do neither. The name "mosquito hawk" is a misnomer. of most do not feed at all. They are also frequently called "daddy longlegs" in some regions, a name also applied to harvestmen (Opiliones) and cellar spiders (Pholcidae), causing further confusion.

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Sources and further reading