Xanthoteras clavuloides (Hymenoptera: Cynipidae) (Synonym: Atrusca clavuloides) Club Gall Wasp Sunol Regional Park, Sunol, Alameda County, California August 20, 2006 ID by Kathy Schick. On Quercus lobata (valley oak).
ID by Kathy Schick. On Quercus lobata (valley oak).