Wool sower gall on Quercus alba: Callirhytis seminator - Callirhytis seminator
Raleigh, near Rts 50 and US 70. Lake Lynn City Park., Wake County, North Carolina, USA
April 20, 2007
Several of these galls on young white oak trees near each other. Older trees were just getting new leaves. I read that this is the "leaf gall" of the wasp. It appeared to be around a young branch.