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

Species Cercyon pygmaeus

Cercyon pygmaeus - male
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 Hydrophiloidea (Water Scavenger and Clown Beetles)
Family Hydrophilidae (Water Scavenger Beetles)
Subfamily Sphaeridiinae
Tribe Megasternini
Genus Cercyon
No Taxon (Subgenus Cercyon)
Species pygmaeus (Cercyon pygmaeus)
Synonyms and other taxonomic changes
Cercyon pygmaeus(Illiger, 1801)
1 to 1.6 mm (smallest member of the genus) (1)
Color variable; complete metasternal lines; narrow mesosternal crest; elytra without setae (1)
Introduced from Palearctic. Widely distributed across United States & southern Canada, transcontinental. (1)
Many kinds of decaying organic matter, including compost, horse & cow manure, and debris near wet areas. Flies during the day and also comes to light. (1)
Earliest eastern specimens known are from Tyngsboro MA in 1868 & 1871. Earliest known specimens from the west coast were from Fieldbrook CA in 1903 and Monroe WA in 1905. (1)
Works Cited
1.Revision of the subfamily Sphaeridiinae of America north of Mexico (Coleoptera: Hydrophilidae)
Smetana A. 1978. Mem. Ent. Soc. Canada 105: 1–292.