Dryophanta cinereae n. sp.
Quercus cinerea [incana]
(The Upland-willow Oak Spangle Gall.)
Galls. — Small, semispherical galls, sessile on the under surface of the leaves; internally there is a loose kernel which moves freely about.
While the fly of this species might easily be confounded with those of the others, the gall easily separates it; it does not project above the upper surface of the leaf as do the other species. Very rare.
”- William Ashmead: (1887) On The Cynipidous Galls of Florida©
Reference: https://www.biodiversitylibrary.org/item/32293#page/154/mode/1up