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Callirhytis flora
2222_1523 Photo added 2007-11-10

Callirhytis flora (Hymenoptera: Cynipidae)
Live Oak Petiole Gall Wasp
Copperopolis, Calaveras County, California
November 6, 2007

Wasps develop in the acorn and abort the acorn's growth. An exit hole is visible in the top acorn (likely from a parasitoid/inquiline). From Quercus wislizenii (interior live oak).

all photos and text © Joyce Gross