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


Family Leiodidae - Round Fungus Beetles

2 mm ball beetle - Agathidium Agathidium Small Carrion Beetle - Catops basilaris Round fungus beetle - Anisotoma Anisotoma errans Brown - Anisotoma errans Small Carrion Beetle - Catops americanus - male Coleoptera Colon oblongum - Colon
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 Leiodidae (Round Fungus Beetles)
Other Common Names
Small Carrion Beetles, Mammal Nest Beetles
Synonyms and other taxonomic changes
Anisotomidae, Catopidae, Cholevidae, Colonidae, Leptinidae, Leptodiridae, Platypsyllidae
Explanation of Names
Leiodidae Fleming 1821
~3500 spp. in ~340 genera worldwide, over 350 spp. in >30 genera in our area (incl. >130 spp. in Canada+Alaska) placed in 5 subfamilies(1)(2)(3)(4)
Overview of our faunaTaxa not yet in the guide are marked (*)
Family Leiodidae
Subfamily Coloninae Colon
Subfamily Catopocerinae
Subfamily Leiodinae
Subfamily Cholevinae
Some European galleries provide samples of the fauna fairly representative of the Holarctic region and give a good idea of what these beetles look like:
Cholevinae and Leiodinae of Germany

A small eighth antennomere is characteristic of Leiodids.
Across the continent(1)
litter, various decayed matter, vertebrate and ant nests/burrows (some even ectoparasites of mammals), caves/caverns, various fungi (incl. subterranean ones) and slime molds (Myxomycetes)(1)