Callirhytis quercussuttoni (Hymenoptera: Cynipidae)
Gouty Stem Gall Wasp
Knowland Park, Oakland, Alameda County, California
November 6, 2021

Image shows a dissected gall with a larva half out of its larval cell and one adult wasp completely out of its larval cell. Host is Quercus agrifolia (coast live oak).