Callirhytis parva, new species
Host.--Quercus imbricaria
Gall.--On the staminate flowers dropping to the ground about the middle of May. Somewhat globular, greenish-white, covered with coarse sprawling pubescence, 3-4 mm in diameter, single or in clusters. Fleshy at surface, but harder inside; usually two-celled.
Locality.--VA, MO
Collected may 16, flies cut out of galls June 11.
”- LH Weld: (1922) Notes on cynipid wasps, with descriptions of new North American species©
Reference: https://www.biodiversitylibrary.org/page/7305399#page/467/mode/1up