Unknown #41 [Russo speculates that this may prove to be the same as the species he lists as Unknown #39, Atrusca aggregata, affected by inquilines causing it to appear polythalamous]
Necked-puzzle-gall wasp
Hosts: Quercus oblongifolia
The surface of this species' galls appears to be broken into distinct plates.
”- Russo, Ronald A. : (2021) Plant Galls of the Western United States©