Callosobruchus maculatus
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Author: Natasha Wright, Florida Department of Agriculture and Consumer Services
Source: IPM Images
Callosobruchus maculatus (Fabricius, 1775) - (cowpea weevil)
The beetle is an important pest of stored cowpeas and other legumes in tropical and subtropical countries. It is occasionally introduced into temperate regions with infested seeds. Once introduced through trade or from the field, it rapidly multiplies in legume stores, causing substantial losses. After hatching, the larvae bore into dry seed and several larvae can develop in one seed. Control is done through fumigation. Several plant products have been also shown to be effective.
The development from egg to adult lasts 1-2 months under suitable conditions. The adult is about 3 mm long, reddish or light-brown with a variable pattern of dark marks. Often, there are 4 darker marks on the elytra and in females 2 more on the exposed apical end of the abdomen.
| Vernacular names | |
|---|---|
| • Deutsch: | Vierfleckiger Bohnenkäfer |
| • English: | cowpea weevil spotted cowpea bruchid cowpea seed beetle |
| • Español: | gorgojo del caupí |
| • Français: | bruche à quatre taches bruchide du niébé |
| • Português: | caruncho-do-café gorgulho-do-feijão-de-corda |
Synonyms
Bruchus ambiguus
Bruchus maculatus
Bruchus ornatus
Bruchus quadrimaculatus
Bruchus sinuatus
Bruchus vicinus
Callosobruchus ambiguus
Callosobruchus ornatus
Callosobruchus quadrimaculatus
For more details see the respective page in Wikipedia.
- Other images of Callosobruchus maculatus (IPM Images, PaDIL and Wikimedia Commons - click to enlarge)
on soybean seeds
eggs on cowpea seeds
side view
side view
head
head
thorax and abdomen
posterior end of female
