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Hessian fly |
Also found in: Wikipedia, Hutchinson | 0.02 sec. |
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Hessian fly, European gall gnat gnat, common name for any one of a number of small, fragile-looking two-winged flies of the suborder Nematocera, order Diptera, which includes the families Tipulidae ( crane flies ), Bibionidae (hairflies), Ceratopogonidae (biting midges ), Chironomidae (true ..... Click the link for more information. , Phytophaga destructor, so named because it was first observed in America shortly after the Hessian troops landed on Long Island in the American Revolution. It is one of the most destructive pests of wheat, barley, and rye. There are usually two generations a year but may be up to five. The adults, 1-10 in. (0.25 cm) long, live only a few days. They lay their eggs on plants, usually where the stems are covered by leaves; the larvae feed on the sap and weaken the plants so that they cannot bear grain. In its winter pupa stage the insect insect, invertebrate animal of the class Insecta of the phylum Arthropoda . Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates. ..... Click the link for more information. looks like and is called a flaxseed. Some control is achieved by planting winter wheat late, after the adult females have laid their eggs. The Hessian fly is classified in the phylum Arthropoda Arthropoda (ärthrŏp`ədə) [Gr.,=jointed feet], largest and most diverse animal phylum. ..... Click the link for more information. , class Insecta, order Diptera, family Cecidomyiidae. BibliographySee bulletins of the U.S. Dept. of Agriculture. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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