Quercus agrifolia
Leaf galls, integral
Contiguous small blisters in parenchyma, tan, often completely aborting the terminal group of leaves. Fig 110. Adults out before May 15 (Lyon).
Fig 110 Small blister in parenchyma. Q-agrifolia. Adults emerge before May 15 (Berkeley).
”- LH Weld: (1957) Cynipid Galls of the Pacific Slope©
Reference: https://babel.hathitrust.org/cgi/pt?id=coo.31924018313555&view=1up&seq=84