chinch bug

a small lygaeid bug, Blissus leucopterus, that feeds on corn, wheat, and other grains.
[1775-85, Amer.]

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insect
 (Blissus leucopterus), important grain and corn pest belonging to the insect family Lygaeidae (order Heteroptera). Though a native of tropical America, the chinch bug has extended its range to include much of North America. It is a small bug, not more than 5 mm (0.2 inch) long. The adult is black with red legs; the white forewings have a black spot near the outer edge. In spring, adults that hibernated during the winter migrate from clumps of weeds to a wheat or other grain field. Each female then deposits about 300 to 500 cylindrical, yellow eggs on the roots, lower leaves, and stems of the grain. Reddish nymphs with a light band across the back emerge from the eggs after one or two weeks and immediately begin to suck the plant's sap. They grow rapidly, becoming dark and molting five times in about 40 days. When the wheat becomes too hard to suck or when harvest begins, large numbers of chinch bugs migrate—by crawling or flying, depending on the stage of development—to another grain field in search of food and a place to deposit eggs for a second generation. In autumn the second-generation adults fly to clumps of grass or some other sheltered place and hibernate during the winter.

      Control methods include the destruction of hibernating sites, controlled planting of cereal grains, and use of immune and resistant crops. Measures effective in small areas include spraying and trapping the migrating bugs in chemical barriers. Since chinch bugs prefer sunshine, planting shade crops, such as cowpeas or soybeans, creates an unfavourable environment. Wet weather promotes the growth of a fungus that kills them.

      The hairy chinch bug (Blissus hirtus) does not migrate. This short-winged insect, sometimes a lawn pest, is controlled by fertilizing, watering, and cutting grass. The false chinch bug (Nysius ericae) is brownish gray and resembles the chinch bug. It feeds on many plants but is rarely an important crop pest.

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Universalium. 2010.

Look at other dictionaries:

  • chinch bug — Chinch Chinch, n. [Cf. Sp. chinche, fr. L. {cimex}.] 1. (Zo[ o]l.) The bedbug ({Cimex lectularius}). [1913 Webster] 2. (Zo[ o]l.) A bug ({Blissus leucopterus}), which, in the United States, is very destructive to grass, wheat, and other grains;… …   The Collaborative International Dictionary of English

  • Chinch bug — Chinch bug, n. (Zo[ o]l.) see {chinch[2]}. [PJC] …   The Collaborative International Dictionary of English

  • chinch bug — ● chinch bug nom masculin (anglais chinch bug) Nom usuel du blissus …   Encyclopédie Universelle

  • chinch bug — chinch′ bug n. ent a small lygaeid bug, Blissus leucopterus, that feeds on corn, wheat, and other grains • Etymology: 1775–85, amer …   From formal English to slang

  • chinch bug — ☆ chinch bug n. a small, white winged, black hemipterous bug (Blissus leucopterus) that damages grain plants by sucking out the juices …   English World dictionary

  • chinch bug — noun small black and white insect that feeds on cereal grasses • Syn: ↑Blissus leucopterus • Hypernyms: ↑lygaeid, ↑lygaeid bug • Member Holonyms: ↑Blissus, ↑genus Blissus * * * …   Useful english dictionary

  • Chinch bug — The term chinch bug can refer to a few different North American insects: Blissus insularis – the southern chinch bug Blissus leucopterus – the true chinch bug Nysius raphanus – the false chinch bug All three species are in the order Hemiptera,… …   Wikipedia

  • chinch bug — /ˈtʃɪntʃ bʌg/ (say chinch bug) noun any of numerous small hemipterous insects of the family Lygaeidae, some of which are very destructive of fruit, vegetables, grasses, and grain crops as the Rutherglen bug. {chinch from Spanish cinche, from… …   Australian English dictionary

  • chinch bug — noun Date: 1785 a small black and white bug (Blissus leucopterus) that is very destructive to cereal grasses …   New Collegiate Dictionary

  • chinch bug — [tʃɪn(t)ʃ] noun a plant eating ground bug that forms large swarms on grasses and rushes. [Blissus leucopterus (America) and Ischnodemus sabuleti (Europe).] Origin C17 (in the sense bedbug ): from Sp. chinche, from L. cimex, cimic …   English new terms dictionary

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