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Species Ischyrus quadripunctatus - Four-Spotted Fungus Beetle

Coleoptera - Ischyrus quadripunctatus Ischyrus quadripunctatus Pale Form - Ischyrus quadripunctatus Four-Spotted Fungus Beetle - Ischyrus quadripunctatus Ischyrus quadripunctatus - Four-Spotted Fungus Beetle - Ischyrus quadripunctatus Erotylid - Ischyrus quadripunctatus Spotted Beetle? - Ischyrus quadripunctatus Lady beetle or look-alike - Ischyrus quadripunctatus
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 Cucujiformia)
Superfamily Cucujoidea (Sap, Bark and Fungus Beetles)
No Taxon (Erotylid series)
Family Erotylidae (Pleasing Fungus Beetles)
Subfamily Erotylinae (Pleasing Fungus Beetles)
Tribe Tritomini
Genus Ischyrus
Species quadripunctatus (Four-Spotted Fungus Beetle)
Synonyms and other taxonomic changes
Ischyrus quadripunctatus (Olivier)
Orig. Comb: Erotylus quadripunctatus Olivier 1791
Explanation of Names
quadripunctatus - four-spotted
4 Nearctic spp.
7-8 mm

Four black pronotal spots diagnostic.
AZ-FL-NY-IA / MB-PQ (BG data)
under rubbish in the winter and on fungi in the summer. (1)
Feb-Sept (BG data)
Primary food is fungi.
Typically found feeding in reasonably large groups.
Pattern is likely aposematic. These beetles were seen to be ignored by an insectivorous Five-lined Skink, Eumeces fasciatus, in Orange County, NC--the beetles even brushed against the basking skink while traversing a log! (Personal observation, P. Coin, 5/21/10.)
Print References
Works Cited
1.A Manual of Common Beetles of Eastern North America
Dillon, Elizabeth S., and Dillon, Lawrence. 1961. Row, Peterson, and Company.
2.Peterson Field Guides: Beetles
Richard E. White. 1983. Houghton Mifflin Company.
3.How to Know the Beetles
Ross H. Arnett, N. M. Downie, H. E. Jaques. 1980. Wm. C. Brown Publishers.