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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Ground and Water Beetles (Adephaga) » Ground Beetles (Carabidae) » Harpalinae » Odacanthini » Long-necked Ground Beetles (Colliuris)
Photo#210572
Colliurus - Colliuris
Copyright © 2008 margarethe brummermann

Colliurus - Colliuris
Picture Rocks, NW of Tucson, Pima County, Arizona, USA
August 4, 2008
Size: 6 mm
Is there only pensylvanicus that looks like this?
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Contributed by margarethe brummermann on 5 August, 2008 - 7:12pm
Last updated 19 August, 2008 - 5:55pm

There are other
species of Colliuris in the U.S. but this sure looks exactly like pensylvanicus.
… Michael C. Thomas, 5 August, 2008 - 7:29pm login or register to post comments

 
Yes,
image superficially does look a lot like Colliuris pensylvanica. This eastern species was not given AZ status in the 1993 catalogue by Bousquet & Larochelle; closest was TX. That catalogue cites three AZ species in the pennsylvanica species group whose species descriptions unfortunately lie buried separately in old and unfamiliar literature. If I'm forced to find something in image that might depart from C. pensylvanica, I would suggest that the darkened base (defined macule?) of the elytra is real and significant. Incidentally, some carabidologists (Lorenz, 2005) have moved this species group to genus Cosnania, formerly subgenus.
… Peter Messer, 5 August, 2008 - 9:40pm login or register to post comments

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