hover fly

hover fly

insect
also called  flower fly,  or  syrphid fly,  

      any member of a family that contains about 6,000 species of insects in the fly order, Diptera. Their various common names refer to the behaviour of hovering around flowers. Hover flies, with their yellow markings, resemble wasps or bees but do not bite or sting. They are distinguished from other flies by a false (spurious) vein that closely parallels the fourth longitudinal wing vein. The species vary from small, elongated, and slender (e.g., Baccha) to large (bumblebee size), hairy, and yellow and black (Criorhina).

      The larvae of many hover flies (e.g., Syrphus americanus, Allograpta obligae) are predatory on aphids, with a single larva consuming the body fluids of hundreds of aphids before entering the resting (pupa) stage. Larvae are also important in pollination. Some, such as the narcissus bulb fly (Merodon or Lampetia equestris) and the lesser bulb fly (Eumerus tuberculatus), tunnel in flower bulbs, onions, and flower corms. Microdon larvae live in ant and termite nests, Volucella larvae, in bumblebee nests, and others, in decomposing vegetation. The rat-tailed maggots (larvae) of the drone fly (Eristalis tenax), which live in drains and polluted waters, have a telescopic breathing tube at the rear that gives them their common name.

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Universalium. 2010.

См. также в других словарях:

  • hover fly — noun : a syrphus fly or other fly that hovers in air * * * hover fly, = syrphus fly. (Cf. ↑syrphus fly) …   Useful english dictionary

  • hover-fly — noun any insect, of the Syrphidae family, having wasp like markings Syn: hoverfly, flower fly, flower fly …   Wiktionary

  • hover — v. & n. v.intr. 1 (of a bird, helicopter, etc.) remain in one place in the air. 2 (often foll. by about, round) wait close at hand, linger. 3 remain undecided. n. 1 hovering. 2 a state of suspense. Phrases and idioms: hover fly (pl. flies) any… …   Useful english dictionary

  • fly — vb 1 Fly, dart, float, skim, scud, shoot, sail are comparable in their extended senses when they mean to pass, or less often to cause to pass, lightly or quickly over a surface or above a surface. Fly (see also ESCAPE 1) may be used to imply… …   New Dictionary of Synonyms

  • fly — [v1] take to the air, usually employing wings aviate, barnstorm*, bend the throttle*, buzz*, circle, circumnavigate, climb, control, cross, dart, dash, dive, drift, flat hat*, fleet, flit, float, flutter, glide, hop, hover, hurry, jet, jet out,… …   New thesaurus

  • hover — *flit, flutter, flitter, flicker Analogous words: *hang, suspend: poise, balance (see STABILIZE): float, *fly, skim, sail …   New Dictionary of Synonyms

  • hover — [v] hang, float over be suspended, brood over, dance, drift, flicker, flit, flitter, flutter, fly, hang about, linger, poise, wait nearby, waver; concept 154 Ant. lie, rest, settle …   New thesaurus

  • fly — fly1 flyable, adj. flyability, n. /fluy/, v., flew or, for 11, 19, flied, flown, flying, n., pl. flies. v.i. 1. to move through the air using wings …   Universalium

  • fly — I (New American Roget s College Thesaurus) v. soar, wing, aviate; float, wave; speed, bolt, dart; flee, decamp, disperse, scatter. See aviation, velocity, escape. II (Roget s IV) n. 1. [An insect] Syn. housefly, bluebottle, bug, winged insect,… …   English dictionary for students

  • Høver M.F. 11 — infobox Aircraft name = Høver M.F. 11 type = Maritime reconnaissance manufacturer = Marinens FlyvebaatfabrikkKjæraas 2003: 3] caption = M.F.11 F.322 in RNNAS service designer = Captain J.E. Høver first flight = 29 September, 1931 introduced =… …   Wikipedia


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