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Andricus albobalani
2222_3242 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. The embryo of this acorn contained one cynipid larva and two adults.

all photos and text © Joyce Gross