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

Upcoming Events

Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Genus Odontotaenius

Horned Passalus beetle - Odontotaenius disjunctus Big Beetle - Odontotaenius disjunctus Horned Passalus - Odontotaenius disjunctus large beetle on ground - Odontotaenius disjunctus Under log - Odontotaenius disjunctus Odontotaenius disjunctus WI051817 - 3 - Odontotaenius disjunctus Odontotaenius disjunctus with mites, anterior, ventral - Odontotaenius disjunctus
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 Passalidae (Bess Beetles)
Genus Odontotaenius
Explanation of Names
Odontotaenius Kuwert 1896
Odontotaenius = 'dentate band/strip'
2 spp. in our area, 5-8 total(1)(2)
30-40 mm
Distinctive elongated, flattened shape; antennae not elbowed, slightly lamellate(3)
New World, mostly the Neotropics; O. disjunctus is widespread in e. US, O. floridanus is a FL endemic(1)(2)
rotting logs
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.Odontotaenius floridanus new species (Coleoptera: Passalidae): a second U.S. passalid beetle
Schuster J.C. 1994. Florida Entomologist 77: 474-478.
3.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.