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WIREWORM

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Originally appearing in Volume V28, Page 740 of the 1911 Encyclopedia Britannica.
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WIREWORM , a popular name for the slender, hard-skinned grubs or larvae of the click-beetles or Elateridae, a See also:

family of the See also:Coleoptera (q.v.). These larvae pass a See also:long See also:life (two or three years) in the See also:soil, feeding on the roots of See also:plants, and they often cause much damage to See also:farm crops of all kinds, but especially to cereals. A wireworm may be known by its broad, quadrate See also:head and cylindrical or somewhat flattened See also:body, all of whose segments are protected by a See also:firm, chitinous cuticle. The three pairs of legs on the thoracic segments are See also:short and the last abdominal segment is, as is frequently the See also:case in See also:beetle grubs, directed downwards to serve as a terminal proleg. The hinder end of the body is acutely pointed in the larvae of the See also:species of Agriotes (A. obscurus and A. lineatus) that are the best known of the wireworms, but in another See also:common See also:form (the See also:grub of Athous haemorrhoidalis) the tail is bifid and beset with See also:sharp processes. The subterranean habits of wireworms make it hard to exterminate them when they have once begun to attack a See also:crop, and the most hopeful practice is, by rotation and by proper treatment of the See also:land, to clear it of the See also:insects before the See also:seed be sown. Passing easily through the soil on See also:account of their shape, wireworms travel from plant to plant and thus injure the roots of a large number in a short See also:time. (See ECONOMIC See also:ENTOMOLOGY.) Other subterranean creatures—such as the " See also:leather-jacket " grub of See also:crane-flies—which have no legs, and geophilid centipedes, which may have over two See also:hundred, are often confounded with the six-legged wireworms.

End of Article: WIREWORM

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