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

Subfamily Scydmaeninae - Ant-like Stone Beetles

Euconnus (Napochus) - Euconnus hairy scydmaenid - Euconnus Scydmaenid - Scydmaenus Cephennium aridum Hopp & Caterino --holotype - Cephennium aridum Euconnus small, hairy beetle - Euconnus Euconnus sp.? - Euconnus coleoptera 2 - Cephennodes
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Staphyliniformia)
Superfamily Staphylinoidea (Rove, Carrion and Fungus Beetles)
Family Staphylinidae (Rove Beetles)
Subfamily Scydmaeninae (Ant-like Stone Beetles)
Synonyms and other taxonomic changes
formerly treated as a family, Scydmaenidae(1)
>200 spp. in 18 genera in our area (~5000 spp. in 90 genera worldwide)(1)
0.6-2.7 mm(1)
key to genera in Arnett & Thomas (2000)(1)
worldwide and throughout N. Amer.
Variety of moist microhabitats (leaf litter, tree hollows, moss, rotten logs, etc.), though sometimes in drier habitats. Some species are associated with ants or termites(1)
Adults and larvae feed on orbatid mites(1)
Print References
Grebennikov V.V, & A.F. Newton. 2009. Good-bye Scydmaenidae, or why the ant-like stone beetles should become megadiverse Staphylinidae sensu latissimo (Coleoptera). European Journal of Entomology 106: 275–301. Full PDF
Lea. A.M. 1910. Australian and Tasmanian Coleoptera inhabiting or resorting to the nests of ants, bees and termites. Proceedings of The Royal Society of Victoria 23: 116-225.
Lea, A.M. 1912. Australian and Tasmanian Coleoptera inhabiting or resorting to the nests of ants, bees, and termites. Supplement. Proceedings of the Royal Society of Victoria, 25: 31-78.
Works Cited
1.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.