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Xylocopa tabaniformis? - Xylocopa tabaniformis - male

Xylocopa tabaniformis? - Xylocopa tabaniformis - Male
Claremont, Los Angeles County, California, USA
April 28, 2013
These carpenter bees have been regular visitors to the Penstemon spectabilis in my yard. They are very zippy, and I've only managed to get this one photo of one that stopped to rob a bit of nectar. They seem smaller than the Valley Carpenter Bee (Xylocopa varipuncta), and of the Carpenter Bees in our area, this one seems most like Xylocopa tabaniformis. Can anyone confirm or correct?

Yes, a male -
and this is the kind of Penstemon the Pseudomasaris vespoides uses.

Moved from Large Carpenter Bees.

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