Quercus chrysolepis
Stem galls, woody stem swellings or cells under the bark
Terminal, hollow, tan, 5-6 mm in dia. Early spring. Fig 54.
- LH Weld: (1957) Cynipid Galls of the Pacific Slope©
Reference: https://babel.hathitrust.org/cgi/pt?id=coo.31924018313555&view=1up&seq=80