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Photo#531619
Unknown beetle larva? - Cybister

Unknown beetle larva? - Cybister
Pella, IA, Marion County, Iowa, USA
June 18, 2011
Size: approx 2 inches
I found a couple of these unknown specimens yesterday while at a wetland near Lake Red Rock. The biggest one was a couple inches long. Could someone help me identify it?

Moved
Moved from ID Request.

Unknown beetle larva
Thank you very much for your help and quick responses!

Cybister fimbriolatus
By distribution -- this is the wide-ranging species.

Looks like Cybister to me too
Where I am (East Texas) that would definitely be Cybister, I don't know if there are any look-alikes further north though.

Dytiscid, I expect.
It bears a resemblance to Cybister:



But don't hold me to the genus. Wait to hear from the experts.