Amphibolips sp.
Quercus myrtifolia
Stem galls, detachable
Like Amphibolips acuminata but wall is thick, 35 mm long. Old and empty galls seen in Oct.
- LH Weld: (1959) Cynipid galls of the eastern United States©
Reference: https://www.biodiversitylibrary.org/item/273718#page/77/mode/1up