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单词 armyworm
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armyworm


ar·my·worm

A0431800 (är′mē-wûrm′)n. Any of various moth caterpillars, especially of the genera Pseudaletia and Spodoptera, that move in large groups and are destructive to crops and other vegetation.

armyworm

(ˈɑːmɪˌwɜːm) n1. (Animals) the caterpillar of a widely distributed noctuid moth, Leucania unipuncta, which travels in vast hordes and is a serious pest of cereal crops in North America2. (Animals) any of various similar caterpillars

ar•my•worm

(ˈɑr miˌwɜrm)

n. any of the larvae of several noctuid moths, esp. Pseudaletiaunipuncta, that often travel in large numbers over a region destroying crops. [1735–45, Amer.]
Thesaurus
Noun1.armyworm - noctuid moth larvae that travel in multitudes destroying especially grass and grainarmyworm - noctuid moth larvae that travel in multitudes destroying especially grass and grainarmy worm, Pseudaletia unipunctagenus Pseudaletia, Pseudaletia - moths whose larvae are armywormscaterpillar - a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth
2.armyworm - moth whose destructive larvae travel in multitudesarmyworm - moth whose destructive larvae travel in multitudesPseudaletia unipunctanoctuid, noctuid moth, owlet moth - usually dull-colored medium-sized nocturnal moth; the usually smooth-bodied larvae are destructive agricultural pestsgenus Pseudaletia, Pseudaletia - moths whose larvae are armyworms
3.armyworm - larva of fungus gnat that feed on cereals and other grains; they march in large companies in regular order when the food is exhaustedfungus gnat, sciara, sciarid - minute blackish gregarious flies destructive to mushrooms and seedlings

armyworm


armyworm,

larva, or caterpillar, of a moth, Pseudaletia unipuncta or Mythimna unipuncta, found in North America E of the Rocky Mts.; also known as the common, or true, armyworm. When numerous, armyworms move in hordes, traveling by night and devouring grasses, young grains, and some leguminous crops. The full-grown larva is about 2 in. (5 cm) long, dark gray with yellow and green stripes. There are usually two generations in a season, the larvae hatching from eggs in late spring and again in late summer. Pupation (see insectinsect,
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.
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) is underground. The moth is grayish brown with a white spot on each fore wing. Armyworms are sometimes serious pests, especially in the second generation of the summer, which occurs when corn and wheat are maturing. Control methods include the use of poisoned bait and the digging of ditches and holes as traps. The armyworm can also be controlled by toxaphene insecticide, but this chemical is prohibited in most states. The caterpillars of several other moth species that form similar hordes and can be serious pests are also known as armyworms. The fall armyworm, Spodoptera frugiperda, of E and central North America and South America is also a serious pest in Africa, where it is typically more destructive than the African armyworm, Spodoptera exempta, in part because it can have six generations in a growing season. The armyworm species are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Lepidoptera, family Noctuidae.

Armyworm

 

the larva of the fungus gnat Sciara militaris of the order Diptera. The white body consists of 12 segments and reaches a length of 7 mm. The head is black. The armyworm lives in mushrooms, under the bark of rotting stumps and trees, and in decomposing vegetables and fallen leaves. When there is a shortage of food, the larvae sometimes form dense ribbon-shaped masses, reaching a length of 4.5 m and a width of 7.5 cm. The adult gnat is 3‣4.5 mm long. The males are black, and the females are black with yellowish stripes along their sides.

armyworm

[′är·mē‚wərm] (invertebrate zoology) Any of the larvae of certain species of noctuid moths composing the family Phalaenidae; economically important pests of corn and other grasses.

armyworm


Related to armyworm: fall armyworm
  • noun

Synonyms for armyworm

noun noctuid moth larvae that travel in multitudes destroying especially grass and grain

Synonyms

  • army worm
  • Pseudaletia unipuncta

Related Words

  • genus Pseudaletia
  • Pseudaletia
  • caterpillar

noun moth whose destructive larvae travel in multitudes

Synonyms

  • Pseudaletia unipuncta

Related Words

  • noctuid
  • noctuid moth
  • owlet moth
  • genus Pseudaletia
  • Pseudaletia

noun larva of fungus gnat that feed on cereals and other grains

Related Words

  • fungus gnat
  • sciara
  • sciarid
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