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Checkered Beetle - Cymatodera inornata

Checkered Beetle - Cymatodera inornata
Spiderweb, Aiken County, South Carolina, USA
April 8, 2011
Size: 9mm
Attracted to light.

Inornate Checkered Beetle (Cymatodera inornata), maybe?

Moved from Checkered Beetles.

sounds good to me
...but we'd better wait for an expert opinion on species

Safe bet. But be careful...
This is most likely Cymatodera inornata. The only doubt lies in that C. bicolor occasionally is NOT bicolored dorsally or even laterally (referring to the orange pronotum). I have seen few such specimens (about 3 out of 1000), but when I have, the orange was at least present around the prosternum (and obviously so when viewed ventrally). Sadly, even when viewing the limited eUS fauna, this huge genus is so poorly covered morphologically that 100% certainty cannot be afforded to this diagnosis.

The brown coloring and appearance of the biclored legs really aren't enough alone. But the pale antennae lean me toward C. inornata over bicolor.

thanks much for the detailed explanation, John.

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