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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Ground and Water Beetles (Adephaga) » Ground Beetles (Carabidae) » Elaphrinae » Elaphrini » Marsh Ground Beetles (Elaphrus) » Elaphrus californicus
Photo#31287
Ground Beetle - Elaphrus californicus
Copyright © 2005 Jay Cossey

Ground Beetle - Elaphrus californicus
Tuscarawas County, Ohio, USA
September 10, 2005
Size: Less than 1 cm

Images of this individual: tag all
Ground Beetle - Elaphrus californicus Ground Beetle - Elaphrus californicus Ground Beetle - Elaphrus californicus
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Contributed by Jay Cossey on 12 September, 2005 - 9:44am
Last updated 18 April, 2006 - 8:20am

ID
Jay, first off, fantastic photo!
I looked through Bousquet and Larochelle’s 1993 catalog of Geadephaga in NA and there are four species of Elaphrus in Ohio, Elaphrus (Elaphrus) californicus, Elaphrus (Elaphrus) ruscarius, Elaphrus (Neoelaphrus) cicatricosus, and Elaphrus (Neoelaphrus) clairvillei. See all four species here
I have ruled out Elaphrus cicatricosus, and Elaphrus clairvillei because of their appearance. That leaves Elaphrus californicus and Elaphrus ruscarius. According to Goulet’s key to Elaphrus, E. californicus has three to seven white setae on the subapical portion of the hind femur, whereas E. ruscarius does not. Looking at your photo, I can see about five setae on the subapical portion of the hind femur, so I would say that the Elaphrus in your photo is E. californicus.
… Chris Wirth, 16 April, 2006 - 1:14pm login or register to post comments

 
Awesome!
Very much appreciated, Chris. Californicus must be right from what you're saying. Thanks for taking the time to look at these!

Jay Cossey
PhotographsFromNature.com
… Jay Cossey, 18 April, 2006 - 8:11am login or register to post comments

 
Sure thing!
Your're welcome! Yes it is E.californicus. I will move your photos to a new guide page.
… Chris Wirth, 18 April, 2006 - 8:19am login or register to post comments

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