Trichoteras vacciniifoliae (Hymenoptera: Cynipidae)   (Synonym: Andricus vaccinifoliae)
Oak Apple Wasp
Angelo Coast Range Reserve, Mendocino County, California
September 23, 2006

Gall is cut open to show the developing wasp inside, in the center of the radiating fibers that connect to the thin outer gall wall. Gall found lying on the ground near the Eel River. Size around 30mm. ID by Ron Russo.