Quercus dumosa
Leaf galls, detachable
Bell-shaped, red, on under side, 2 mm high, 3 mm in dia. Fig 178.
Fig 178. Unknown. On under side of leaf of Q. dumosa. Bell-shaped, 2.0 mm. high, reddish. Contained a larva on Dec. 21 (Banning).
”- LH Weld: (1957) Cynipid Galls of the Pacific Slope©
Reference: https://babel.hathitrust.org/cgi/pt?id=coo.31924018313555&view=1up&seq=88