Callirhytis sp.
Quercus breviloba, stellata
Stem galls, cells hidden under bark
Cells just under bark in wood of current year's growth in the fall. Adults out in Apr. More common on Quercus stellata.
[Photo caption]
On Q stellata. Also on Q breviloba, durandii [sinuata]. Cell 2.1 by 1 mm just under the bark in wood of current year's growth. Adults were cut out Apr 11, all females, and the writer is unable to separate them from Callirhytis crypta. If they are that species it is the first case of a red oak species being reared from a gall on a white oak.
- LH Weld: (1959) Cynipid galls of the eastern United States©
Reference: https://www.biodiversitylibrary.org/item/273718#page/120/mode/1up