bean beetle


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bean beetle,

common name for a destructive beetle, Epilachna varivestis, of the ladybird beetleladybird beetle
or ladybug,
member of a cosmopolitan beetle family with over 4,000 species, including 350 species in the United States. Ladybird beetles are mostly under 1-4 in. (6 mm) long and are nearly hemispherical in shape, with very short legs.
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 family. Although nearly all other members of this family are beneficial carnivores, the bean beetle attacks leguminous plants, especially beans. Both larva and adult feed on the undersides of leaves and sometimes on the pods. The adult is yellow, with black spots; the yellow, oval-bodied larva has forked spines. Bean beetles overwinter as adults and in early spring lay masses of 10 to 50 eggs on the undersides of leaves. One to four generations occur annually, each requiring about a month to mature. Since most damage occurs during July and August, early-maturing beans suffer the least damage. Removing old bean plants helps to destroy overwintering beetles, although many escape to nearby sheltered areas. Chemical insecticides are used for control. Before 1920 the bean beetle, also called Mexican bean beetle, was found only in the SW United States, but it now occurs throughout most of the United States, except on the Pacific coast. It is 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 Coleoptera, family Coccinellidae.
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Lawrence Blumer and Christopher Beck for inspiring us through their National Science Foundation-sponsored Bean Beetle Curriculum Development Workshop.
To determine whether soybean genotype (cultivar) can affect Mexican bean beetle population dynamics, we compared the dynamics of caged beetle populations in the field on four genotypes of soybeans.
In contrast, female Mexican Bean beetles (Epilachna varivestis) reared as larvae on young, good-quality host foliage were heavier and flew longer than those reared on senescent, poor-quality foliage (Saks et al.
I have used Pediobius wasps for quite effective control of Mexican bean beetle.
Field evaluation of soybeans for Mexican bean beetle resistance.
Notice of release of five lines of soybean resistance to Mexican bean beetle.
The most aggravating pest is the Mexican bean beetle.
1971) as resistant to Mexican bean beetle (Epilachna varivestis Mulsant).
has stemmed from a discovery of three cultivars resistant to Mexican bean beetle (Epilachna varivestis Mulsant) (PI 171451, 229358, and 227687) (Van Duyn et al.