Xanthoteras clavuloides (Hymenoptera: Cynipidae) (Synonym: Atrusca clavuloides) Club Gall Wasp Sunol Regional Park, Sunol, Alameda County, California September 14, 2013 Wasp gall on a leaf. Host is Quercus lobata (valley oak).
Wasp gall on a leaf. Host is Quercus lobata (valley oak).