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

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

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Genus Heterocerus

Representative Images

Dampfius mexicanus (Sharp) - Heterocerus mexicanus Hetero 4 - Heterocerus Hetero 5 - Heterocerus fenestratus Variegated Mud-loving Beetle - Heterocerus fenestratus A Mud-lover.. - Heterocerus Heterocerus Heterocerus mollinus - male beetle from mudflat - Heterocerus

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Elateriformia)
Superfamily Dryopoidea
Family Heteroceridae (Variegated Mud-loving Beetles)
Genus Heterocerus

Synonyms and other taxonomic changes

the genus was split into multiple genera by Pacheco(1); his classification was adopted in(2)(3)(4), but rejected based on recent analysis(5)(6), with 11 genera erected by him sunk back to Heterocerus(6)

Explanation of Names

Heterocerus Fabricius 1792

Numbers

29 spp. in our area, ~200 total(6)

Size

2.6‒6.9 mm(6)

Identification

see (1); several spp. added since

Range

all continents except Antarctica(6)

Habitat

wide variety of riparian habitats; precise habitat does seem to correlate with species composition at a given location and quite different species were often taken from separate habitats that were physically near one another(6)

Works Cited

1.Sistemática, filogenia y distribución de los heteroceridos de America : (Coleoptera : Heteroceridae)
Pacheco F. 1964. Monografias del Colegio de Post-Graduados 1, Escuela Nacional de Agricultura, Chapingo, Mexico. xii + 155 pp.
2. A catalog of the Coleoptera of America north of Mexico. Family Heteroceridae.
Pacheco, F. 1978. USDA, Agric. Handbook. x + 9 pp. 1978. USDA.
3.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
4.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.
5.Molecular data resolves relationships within Heteroceridae (Coleoptera: Dryopoidea)
King J.G., Starr J.R., Lago P.K. 2011. Syst. Entomol. 36: 435–445.
6.The variegated mud-loving beetles (Heteroceridae) of Mississippi and Alabama, with discussion and keys to se US spp.
King, J.G. and P.K. Lago. 2012. Insecta Mundi 0275: 1-53.