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

Subfamily Bolboceratinae

Beetle - Eucanthus Tiny Triceratops Beetle - Odonteus thoracicornis Beetle unknown - Odonteus Geotrupidae -? - Eucanthus impressus Bolbelasmus hornii (Rivers) - Bolbelasmus hornii - male Earth-Boring Machine - Bolbocerastes imperialis - female Another Geotrupid? - Odonteus Beetle - Bolbocerosoma bruneri
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)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Geotrupidae (Earth-Boring Scarab Beetles)
Subfamily Bolboceratinae
Explanation of Names
From Bolboceras (a junior synonym of Odonteus), 'bulbous horn'
ca. 40 spp. in 7 genera in our area, >300 spp. in 13 genera total(1)
antennae with 11 segments, last 3 forming a club; eyes partially or completely divided by a canthus
worldwide, incl. most of our area(1)
adults feed on fungi; larvae of some genera (Eucanthus, Bolboceras, Bolbocerosoma), on fine humus formed into a brood ball(1)
Works Cited
1.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.
2.Biology and taxonomy of North American beetles of the subfamily Geotrupinae, with revisions of the genera....
H.F. Howden. 1955. Proceedings of the United States National Museum, 104(3342): 151-319, plates 1-18.
3.Scarabaeid beetles of the genus Bradycinetulus and closely related genera in the United States
O. L. Cartwright. 1953. Proceedings of the United States National Museum, Washington Vol. 103, No. 3318: 95-120.