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

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of 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

Previous events

beetle - Retocomus

beetle - Retocomus
Mt Diablo State Park, Contra Costa County, California, USA
May 7, 2006
Size: approx. 15mm

Images of this individual: tag all
beetle - Retocomus beetle - Retocomus beetle - Retocomus beetle - Retocomus

Anthicidae: Eurygeniinae: Retocomus sp.
It is a Retocomus, with 13 species known from California.

It must be on the HUGE end for Anthicidae.

sure looks good

Phil beat me to posting the link to the SBMNH site. That looks like a good match.

Do Anthicids have notched eyes? It seems the eyes on this one are somewhat notched.

I didn't have a measuring device with me -- need to put one in my camera bag! -- so I could be a little off on the size. It still was a fairly large beetle (compared to many of the others I've been seeing lately). I don't think it was less than 12mm.

Also, I forgot to mention that I found it on the leaf on which it was photographed.

Notched eyes and size
This is about as big as anthicids get - Pergetus campanulatus is probably the largest at 16 or so mm (from the Pacific Northwest and maybe getting as far south as the Bay Area) - members of the Eurygeniinae are big enough to be pinned rather than pointed! Retocomus is one of the few anthicids with noticeably notched eyes, and one of your lateral shots was most helpful in this regard.

thanks Don
I'll see if I can find anything interesting/useful regarding this beetle at the UCB museum next chance I get.

I have curated
all the subfamilies except the Eurygeniines at UCB/CISC - you may find them in pretty much of a mess.

I did. Any plans to do some more curating at UCB? :)
The subfamilies you curated are in great order.

I really appreciate your help identifying this beetle to genus -- thanks again.

I'm very curious about this one, Joyce.
Nice find.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.