Pests. Acanthoscelides obtectus Say – Bean Weevil. Object map. Systematic position. Class Insecta, order Coleoptera, family Bruchidae, genus Acanthoscelides. Size: mm. Basic colour: Brown Pattern colour: Darker spots scattered, sometimes paler longitudinal streaks. Number of spots: Numerous small dark spots. Citation: Walker, K. () Bean weevil (Acanthoscelides obtectus) Updated on 1 /25/ AM Available online: PaDIL.

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Bean weevils feed on vetchesbeans and other leguminous plants.

Continuing to use www. White pupa is about 4 mm in length. It has been recorded on a number of other legumes, including cowpeas in Mexico, chickpeas and Voandzeia subterranea, but it seldom attains pest status on these hosts.

Acanthoscelides obtectus (Say, ) | UK Beetle Recording

To studying bean weevil in Georgia and its control. Larvae have bristles and three pairs of legs. In other projects Wikimedia Commons Wikispecies. Acanthoscelides obtectus Scientific classification Kingdom: The species is very sensitive to temperatures below zero. The eggs develop during days.

Home Australian Biosecurity Bean weevil. Oligophagous pest of leguminous. Archived from the original on 3 February Within the territory of the Former Soviet Union, the insect is marked with spotted distribution.

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AgroAtlas – Pests – Acanthoscelides obtectus Say – Bean Weevil

Views Read Edit View history. They are usually found in dried kidney and haricot beans. Cookies on Plantwise Knowledge Bank Like most websites we use cookies. Knowledge Bank home Change location.

They have a ‘tear drop’ like body shape and are covered in short hairs. Biological basis for control measures improvement on haricot-bean seeds against bean weevil.

Bean weevil and its control. Biological features of bean weevil Acanthoscelides obtectus Say in Georgia. Most important predators are Eupelmus degeeri Dalm.

At first they feed on vetch, peavine, lupin, alfalfa, and other leguminous cultures; they then move on to haricot bean, bean, soybean, lentils. Diagnostic Notes Grey-green in colour and about 3 – 5 mm long. The bean weevil is a significant pest in some parts of the world, especially in areas such as Australia where it is non-native.

Page Through Results Previous 1 2 Next. Fecundity of one female reaches acanthoseclides. The northern border of its area goes along northern borders of Lithuania, Byelorussia, Tula and Ryazan’ Regions, Bashkortostan, Tatarstan.

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The wing cases are short and mottled brown with the antennae being grey and reddish. Larvae and pupae develop entirely within grain legumes. Close Find out more.


Acaanthoscelides Insecta, order Coleoptera, family Bruchidae, genus Acanthoscelides. The species was described in by Thomas Say. About temperature and humidity influence on bean weevil obteectus and damaging haricot-bean seeds at keeping conditions.

Related Species Lesser pea weevil – [Bruchus affinis] Pea weevil – [Bruchus pisorum] Broadbean weevil – [Bruchus rufimanus] Graham bean weevil – [Callosobruchus obhectus Southern Cowpea weevil – [Callosobruchus chinensis] Cowpea weevil – [Callosobruchus maculatus] Cowpea Weevil – [Callosobruchus phaseoli].

Dark brown short elytra do not cover abdominal end. See Department of Agriculture, Western Australia weblink. This page was last edited on 22 Marchat Bean weevils are originally native to Central America, [5] however grain shipments at the end of the 19th century introduced the species to Europe where it subsequently spread around the globe.

Bean weevils develop and feed upon leguminous plants.

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