Besbicus heldae (Hymenoptera: Cynipidae) (Synonym: Cynips heldae) Thorn Gall Wasp Atchison Campground, Mendocino National Forest, Glenn County, California May 22, 2012 Bud galls on Quercus garryana (Oregon white oak).
Bud galls on Quercus garryana (Oregon white oak).