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Photo#258030
Mining bee, Andrena sp.? - Andrena - male

Mining bee, Andrena sp.? - Andrena - Male
Chamblee, DeKalb County, Georgia, USA
March 10, 2009
Size: 1/2 inch
Swarming above red-berry holly most of the day.

Andrena male
Males of many Andrena species, such as A. imitatrix, fly in large numbers about the tips of tree branches in early spring. They are looking for females. A paper by S. Batra describes this behavior well.

 
Thank you!
You have a citation for the paper?

 
This one may be helpful:
Batra, S. W. T. 1990. Bionomics of a vernal solitary bee Andrena (Scrapteropsis) alleghaniensis Viereck in the Adirondacks of New York (Hymenoptera: Andrenidae). Journal of the Kansas Entomological Society 63:260–266.

Your image is not of A. alleghaniensis but it may be of A. imitatrix, which is in the same subgenus and behaves in a similar way.

 
Thanks again.
I am amazed at what I've found in my own back yard!

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