Possibly Black Carpet Beetle

Annual bug ID needed.
Location: Philadelphia, PA, USA
June 16, 2011 8:27 am
These little beetle-like bugs seem to appear annually in our urban Philadelphia home.
We often see them on their backs, seemingly unable to right themselves. They crawl around otherwise, and we’ve never seen them fly, so I don’t think their capable of flight.
They appear for a month or so, then we don’t see them again for a year.
Thanks for any info you can provide.
Signature: Phrantic in Philly

Maybe Black Carpet Beetle

Dear Phrantic in Philly,
These annual household intruders resemble Black Carpet Beetles, but the photo quality is not ideal.  It seems there is some discrepancy with the shape of the prothorax and the antennae, but we are not certain.  We have requested assistance from Eric Eaton.  Meanwhile, you may read about Black Carpet Beetles on BugGuide.  Black Carpet Beetles are sometimes called Fur Beetles because the larvae damage fur and hide objects, and they can do considerable damage to museum collections.

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