description Bean Weevil Overview
The bean weevil, usually identified as Acanthoscelides obtectus, is a bruchine seed beetle and a pest of common beans and other stored legumes. Females lay eggs on pods or seeds, and the larvae bore into the seed, where the larval and pupal stages develop while consuming its contents. Infestations can remain hidden inside apparently intact beans until adult beetles cut circular exit holes, making the species relevant to growers, grain handlers, and households storing dry beans.
help Bean Weevil FAQ
What is the scientific name of the bean weevil?
The bean weevil is usually identified as Acanthoscelides obtectus. It is a bruchine seed beetle that attacks common beans and other stored legumes.
How do bean weevil larvae damage beans?
Females lay eggs on pods or seeds, and the larvae bore into the seed after hatching. They develop through larval and pupal stages while consuming the bean internally.
Can bean weevils infest stored beans?
Yes, bean weevils can continue their life cycle in stored legumes. Infested beans may show small exit holes when adult beetles emerge.
Which foods are affected by bean weevils?
Common beans are the main host, but the beetle can also attack other stored legumes. The risk is greatest where dry beans are stored for long periods under suitable conditions.
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