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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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If you would like to, you can learn more about the cookies we use. Good store hygiene plays acanthosceliides important role in limiting infestation by this species.

The removal of infested residues from last season’s harvest is essential. When small lots of beans are stored, daily turning of the storage container can significantly reduce infestation.


Chemical Control Due to the variable regulations around de- registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources: EU pesticides database www.

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Admixture of approved grain insecticides, especially organophosphorous compounds, will protect against this pest. When grain pulses are stored at farm level the acnthoscelides of vegetable oil can give good protection Baier and Webster, Biological Control Biological control has not been used against this species. Cookies on Plantwise Knowledge Bank Like most websites we use cookies.

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Knowledge Bank home Change location. Go to distribution map Cajanus cajan pigeon pea.

AgroAtlas – Pests – Acanthoscelides obtectus Say – Bean Weevil

Larvae and pupae develop entirely within grain legumes. Adults emerge through a window cut in the testa, so heavy infestation can result in a large number of holed seeds, with adults moving across the stored commodity. Cultural Control and Sanitary Methods Good store hygiene plays an important role in limiting infestation by this species. 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.


Management of bean weevils with insecticides. Control del gorgojo de frejol en almacen. Gorgojo de granos almacenados en frijol-Nicaragua.

Bruchids pea and bean weevils Callosobruchus chinensisC.


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