Burnettweldia washingtonensis (Hymenoptera: Cynipidae)
Round-Gall Wasp
Sunol Regional Park, Sunol, Alameda County, California
May 29, 2006

Old wasp gall on Quercus lobata. The gall contained this Sycophila sp. inside. Sycophila is a primary or secondary parasitoid of the gall inducer. Thanks to Kathy Schick and Bob Zuparko for helping identify the parasitoid.