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Acanthoscelides obtectus (Say)
Common Bean Weevil


The weevel is 3-5 mm long, yellow-green to olive, mottled with darker brown and grey; the end of the abdomen is yellow-red. The grub-like white larvae are hairy and grow to a length of up to 4 mm.

Life History:

The female lays an average of 40-50 eggs loosely between the beans; in hot countries, also in the ripening pods in the field. The larva develops in the bean; several can develop in one bean. Before pupation, the larva prepares a circular exit hole which remains covered only by the skin of the seed ("window").


In most warm countries. In the temperate zones mainly in stores.


Attacks all pulses, particularly beans. Can reproduce repeatedly in dried pulses in store.

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