Cynips plumbea, new species
Hosts: Quercus oblongifolia, arizonica
Gall (fig. 12). — Globular, 8-11 mm. in diameter, produced singly in the fall on the under side of leaf saddled on midrib. Lead color when fresh with a whitish bloom that easily rubs off and leaves a shining surface. Green or rosy on one side when growing, tan-colored when old. Monothalamous, the larval cavity surrounded by a wall about one-third the diameter of gall thick.
Range: AZ
”- LH Weld: (1926) Field notes on gall-inhabiting cynipid wasps with descriptions of new species©
Reference: https://www.biodiversitylibrary.org/page/7610635#page/332/mode/1up