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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The species was described in by Thomas Say. The insect has clavate antenna first segments are red-brown and yellow-red legs.

Legs are yellow red and antenna red brown. Related Species Lesser pea weevil – [Bruchus affinis] Pea weevil – [Bruchus pisorum] Broadbean weevil – [Bruchus rufimanus] Graham bean weevil – [Callosobruchus analis] Southern Cowpea weevil – [Callosobruchus chinensis] Cowpea weevil – [Callosobruchus maculatus] Afanthoscelides Weevil – [Callosobruchus phaseoli].

Partially damaged grains lose their germinating power and taste quality. At first they feed on vetch, peavine, lupin, alfalfa, and other leguminous cultures; they then move on to haricot bean, bean, soybean, lentils. Bean weevils feed on vetchesbeans and other leguminous plants. Mylabris mimosae Oliver More Information Author Walker, K. Continuing to use www. Diagnostic Notes Grey-green in colour and acanthosceliees 3 – 5 mm long.

AgroAtlas – Pests – Acanthoscelides obtectus Say – Bean Weevil

acanfhoscelides Plant protection against agricultural pests, diseases, weeds in Pskov region Proc. Within the territory of the Former Soviet Union, the insect is marked with spotted distribution.


Larval period acanthosceliides Proceedings of Georgian plant protection institute, Class Insecta, order Coleoptera, family Bruchidae, genus Acanthoscelides. Acanthoscelides obtectusthe bean weevilis a species of beetle. If the seeds are stored in a warm place multiple generations can be produced one after another. In some days after coupling, female lay eggs into or on ripening pods by groupspiercing the pod sutures or gnawing holes.

About ecology and harming activity of obtextus weevil Acanthoscelides obtectus Say in Armenian conditions.

Retrieved from ” https: To studying bean weevil in Georgia and its control. Bean weevils develop and feed upon leguminous plants. The largest number and harming activity are observed at the end of June and in Acanthoscdlides. Go to distribution map By using this site, you agree to the Terms of Use and Privacy Policy. Knowledge Bank home Change location. Gorgojo de granos almacenados en frijol-Nicaragua.

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White pupa is about 4 mm in length. The grub, or larva, is whitish and hairy. The species is very sensitive to temperatures below zero. Larvae penetrate into the grains, eating the contents completely. For further information, we recommend you visit the following resources: Like most websites we use cookies. The bean weevil is a significant pest in some parts of the world, especially in areas such as Australia where it is non-native.


The beetles appear at the temperature Admixture of approved grain insecticides, especially organophosphorous compounds, will protect against this pest.

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Control measures include keeping the temperature below zero in storehouses, fumigation, insecticide treatments in fields. The femur of the hind leg has three tooth-like spines. The pest arrives in the acanthiscelides with grain where it develops until cold.

Publishing house of agricultural department. The wing cases are short and mottled brown with the antennae being grey and reddish. Control del gorgojo de frejol en almacen. They have a ‘tear drop’ like body shape and are covered in short hairs. In storehouses, the pest occurs in more northern territory.

Bean weevil

Pronotum is wider than it is long; quadrangular scutellum is large. The insect produces a sweet, “fruity” pheromone that gives cultures of newly emerged adults a pleasant smell. The beetle body is ovoid, slightly convex, light or dark brown, with yellow-green golden hairs and longitudinal spots from above, light gray hairs from below. Proceedings of Sixth Session of Transcaucasian Board to coordination research works on plant protection November, Eleytra does not cover the abdominal end.