Andricus chico Weld.
Quercus lobata
Stem galls, bud galls
Fig 156. Smooth, ovoid, lateral bud gall in Oct.
Fig 156. Q.lobata. From galls collected at Chico Oct. 18, 1948 adults were cut out Nov. 10, 1949. One emerged Apr. 15, 1940 from a gall collected in Oct.1939 (Willits).
”- LH Weld: (1957) Cynipid Galls of the Pacific Slope©
Reference: https://babel.hathitrust.org/cgi/pt?id=coo.31924018313555&view=1up&seq=87