Red-Topped-Cup-Gall Wasp
Unknown #54
Hosts: Quercus oblongifolia
Galls of this species or variety occur just off the ventral midrib on Mexican blue oak leaves. This gall has a yellow base column that is covered with small white bumps. As the column rises, it flares out into a round, dark red bowl.
”- Russo, Ronald A. : (2021) Plant Galls of the Western United States©