Quercus laurifolia, phellos
A pip gall dropping in early May after which an outer fleshy later decays leaving a hard shell with a rough surface as in photo.
On Q phellos. Galls drop in early May (DC) and an outer layer decays leaving a hard shell as in photo. Adults emerged the next spring Apr 9-16 and the second spring Apr 17.
- LH Weld: (1959) Cynipid galls of the eastern United States©