Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Clickable Guide

Interactive image map to choose major taxa Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar

Upcoming Events

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27


Species Callosobruchus chinensis - Southern Cowpea Weevil

Representative Images

Fungus Beetle ? - Callosobruchus chinensis - male Callosobruchus chinensis - male Callosobruchus chinensis - female Callosobruchus chinensis - female Callosobruchus chinensis - male please identify - Callosobruchus chinensis Bruchini - Callosobruchus chinensis Bruchini - Callosobruchus chinensis

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Bruchinae (Pea and Bean Weevils)
Tribe Bruchini
Subtribe Acanthoscelidina
Genus Callosobruchus
Species chinensis (Southern Cowpea Weevil)

Other Common Names

Oriental Cowpea Bruchid(1), Mung Bean Bruchid, Cowpea Weevil (also applied to C. maculatus), Cowpea Beetle, Adzuki Bean Weevil(2), Adzuki Bean Seed Beetle, Pulse Beetle, Chinese Bean Weevil, Chinese Bruchid

Explanation of Names

Callosobruchus chinensis (Linnaeus 1758)

Size

2.7–3.0 mm(3)

Range

native to temperate Asia(4), adventive elsewhere (now tropicopolitan); in our area, recorded across the US & Canada (north to NS-QC-CA; in Canada, found occasionally in imported beans and does not survive in the wild(3)(5)(6)(7)

Food

hosts: various Fabaceae + Nelumbo (Nelumbonaceae)(3); known to switch to wild legumes in many areas outside its native range(4)

Remarks

widely used as lab model for research(3); may severely damage stored pulses of legumes(4)

Internet References

Fact sheets: anon. (2013)(8) | Schmidt (2011) (wikimedia) | Walker (2011)(9) |

Works Cited

1.A Dictionary of Entomology
George Gordh, David H. Headrick. 2003. CABI Publishing.
2.Thesaurus of agricultural organisms: pests, weeds and diseases
Derwent Publications (compilers/eds.). 1990. London: Chapman and Hall, 2 vols, 2368 pp.
3.Handbook of the Bruchidae of the United States and Canada
Kingsolver J.M. 2004. USDA Tech. Bull. 1912 (2 vols.).
4.Alien terrestrial arthropods of Europe
Roques A., Kenis M., Lees D., Lopez-Vaamonde C., Rabitsch W., Rasplus J.-Y., Roy D., eds. 2010. BioRisk 4 Special Issue; 2 vols., 1028 pp.
5.Beetles associated with stored products in Canada: An identification guide
Bousquet Y. 1990. Research Branch Agriculture Canada, Publication 1837.
6.The Bean Weevils (Coleoptera: Chrysomelidae: Bruchinae) of Atlantic Canada
Majka C.G., Langor D. 2011. J. Acad. Entomol. Soc. 7: 75-82.
7.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.
8.Canadian Grain Commission: insect pests of stored grain
9.PaDIL – High quality images and information tools designed for Biosecurity and Biodiversity