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Chlaenius of Chicago - Chlaenius

Chlaenius of Chicago - Chlaenius
Illinois, USA
I believe this is every species likely to occur in Illinois. Not sure how many of these occur within the city limits of Chicago, but this should be a useful comparison for much of the Midwest. Specimens to scale.

Nice poster!
But leucoscelis isn't actually in Chicago, right? The 2012 catalog only lists it for southwestern states.

Yeah, I mixed up the older taxonomy on that one. C. cordicollis is the eastern species now. Thanks for pointing that out!

Looking at this now makes me think this might be solitarius:

It's hard to say for sure.

Did you collect most of these yourself? I just collected my sixth species of Chlaenius at Utah Lake. My list goes C. sericeus, C. pennsylvanicus, C. tricolor, C. nebraskensis, C. lithophilus and C. harpalinus. I'm interested in learning how you caught your purpuricollis.

The specimens are mostly taken from bugguide. The C. purpuricollis was an image on wikipedia, but I'll try to photograph a few from the collection this afternoon. Bell's revision says that the population from Illinois & Indiana is associated with the Lake Michigan shoreline. The C. purpuricollis frosti subspecies in the Northern Great Plains is apparently associated with more arid locales. Weird ecological dichotomy there.

Thank you for the information
Thank you for the information. I have read that they are associated with shallow soils. I am aware of a record for Coconino County, Arizona. They might not be too uncommon in Utah if I find the right habitat. There are many surprising finds here.

very helpful indeed
there's a typo, should be brevilabris

could you please post a separate photo of Ch. solitarius to fill the gap in the Guide?

Thanks for pointing out that typo. The C. solitarius was an image I found online, but I'll check at the museum for specimens.

Excellent resource!
Thanks, Joe

This might be worth adding to the info page for the genus?

Placed on Info page
under Identification

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