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Coproporus ventriculus

Coproporus ventriculus
Duke Forest Gate F, off of NC 751, Durham County, North Carolina, USA
August 23, 2009
Size: 3 mm
Found at a lighted sheet during a night-time survey. I can post views of the ventral side as well, if that is helpful.
Based on comments on our other specimen to date of Coproporus laevis--the only one in the East with pronotum, elytra, etc. non-punctate:

See comments below--appears to be Coproporus ventriculus.

Images of this individual: tag all
Coproporus ventriculus Coproporus ventriculus Coproporus ventriculus Coproporus ventriculus

Moved from Coproporus laevis.

This may be laevis, but it is
This may be laevis, but it is hard to tell if the pronotum is impunctate. To be laevis the pronotum must be clear of even micropunctures (small, without setae) and microsculpture. Both of these features are found on the more widespread (though NC is within the range of laevis) ventriculus. Also, the antennae are more sharply bicolored in this photo than I am used to with laevis but that may fall within the range of variation. Unless checked under a scope, I'd leave this at genus level.



additional images
New images linked, such as:

What's the verdict?

Hi Cotinis, As far as I c
Hi Cotinis,

As far as I can see with the new close-ups, I think this is ventriculus, based on the micropunctures on the pronotum. I'm not entirely convinced that the other 'laevis' on here is actually that species either but I don't have the detailed photos to confirm.

Thanks for details, will check
I retained the specimen on this one, so will be able to check on that. I'll leave this here, pending more photos of the details above.

Moved from Coproporus.
Thanks for help on the ID, Adam!

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