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Quite a few under bark of felled tree
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Quite a few under bark of felled tree
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Quite a few under bark of felled tree
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Located on a bearded iris flower. Surrounding area: farm/brushy canyon.
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http://bugguide.net/node/view/163786
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ID based on BugGuide image comparison within the genus. The only other species there with a black head, red pronotum, and all-black elytra is A. verticinus, which seems to always have some black markings on the pronotum, particularly along the posterior edge.
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Ampedus nigricollis. Rock Creek Park, Washington, DC, USA.
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Ampedus nigricollis. Rock Creek Park, Washington, DC, USA.
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@borisb