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Andricus quercuscalifornicus
2222_1289 Photo added 2007-05-27

Andricus quercuscalifornicus (Hymenoptera: Cynipidae)
California Gall Wasp
Mt Diablo State Park, Contra Costa County, California
April 1, 2007

On Quercus lobata (Valley Oak). New gall on the left growing next to a previous year's gall on the right.

all photos and text © Joyce Gross