C. q. scitula, n. sp.
There is little or no apparent difference [between this and Neuroterus quercusbatatus] in the gall than pertains to the different species of oak on which they grow.
Quercus tinctoria [velutina].
Woody, tuber-like galls, growing on the green branches of Q tinctoria [velutina], sometimes simply an enlargement of the limb, at others entirely checking its growth and covered with leaves. They are from three-fourths to an inch and a half in length, and rather more than half an inch in diameter at the base, tapering to a cone-like point.
”- HF Bassett: (1864) Descriptions of several new species of Cynips and a new species of Diastrophus©
Reference: https://www.biodiversitylibrary.org/page/3745772#page/704/mode/1up