Quercus ilicifolia, imbricaria, rubra, velutina
Stem galls, detachable
Lenticular, polished, bursting out of bark and dropping when mature in Sept. Difficult to rear. Type host [Quercus rubra]
On Q imbricaria. Also on Q rubra (type host), velutina, ilicifolia. From galls picked up on ground in Oct 1944 a living adult was found in the cage Jan 1 1946. Normal emergence date unknown. A bit of cloth tied about the twig will prevent the galls from being lost when they mature and drop. Fig 282 shows the individual gall.
- LH Weld: (1959) Cynipid galls of the eastern United States©