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

Discussion of 2018 gathering

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

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Tricorynus

Death Watch Beetle ? - Tricorynus Tricorynus fastigiatus (Fall) - Tricorynus fastigiatus Anobiidae > Tricorynus ? - Tricorynus Anobiid - Tricorynus 8W06 - Tricorynus - female Tricorynus? - Tricorynus Red ptinid? - Tricorynus Beetle - Tricorynus dichrous
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 Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Mesocoelopodinae
Tribe Tricorynini
Genus Tricorynus
Synonyms and other taxonomic changes
Catorama Guérin-Méneville 1850, Hemiptychus LeConte 1865, Cathorama Gemminger & Harold 1869, Xylotheca Reitter 1897
Explanation of Names
Tricorynus Waterhouse 1849
name alludes to the 3-segmented antennal club
84 spp. (and 5 sspp.) in our area(1), >30 more described spp. in the neotropics
1.5-6 mm
Mesosternum between mesocoxae produced into a hump or hook (diagnostic); antennae 10-segmented; pubescence of the body fine and recumbent; prothoracic tibiae almost always striate.
for species identification, see(2); add'l sp. described in(3)
key to WI spp. in(1)
Species tend to be variable, and very hard to key out using existing literature. Further work is needed to resolve species limits.
New World; many neotropical spp., mostly undescribed; a few spp. have been spread by commerce over (sub)tropical regions of the world, at least one naturalized in so. Africa
Diverse: apparently mostly plant seeds, also galls, dead stems/twigs, fungi, and stored products (e.g. T. herbarius)(1)
Works Cited
1.Death-watch and spider beetles of Wisconsin—Coleoptera: Ptinidae
Arango, R.A. and D.K. Young. 2012. General Technical Report FPL-GTR-209. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.
2.A revision of the genus Tricorynus of North America (Coleoptera: Anobiidae)
White R.E. 1965. Misc. publ. Ent. Soc. Am. 4: 283-368.
3.Three new species of Anobiidae from southwestern United States and northwestern Mexico (Coleoptera)
White R.E. 1981. Proc. Ent. Soc. Wash. 83: 472-278.