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Andricus albobalani
2222_3244 Photo added 2021-06-17

Andricus albobalani (Hymenoptera: Cynipidae)
Mt Diablo State Park, Contra Costa County, California
November 24, 2017

Stunted Quercus douglasii (blue oak) acorn, cut open in search of gall wasps. These images contains the embryo of the acorn (but not the cap), along with two adult wasps dissected out of their larval chambers.

all photos and text © Joyce Gross