Protobalandricus spectabilis (Hymenoptera: Cynipidae) (Synonym: Disholcaspis spectabilis) Tapered Stem Gall Wasp Mt Diablo State Park, Contra Costa County, California August 7, 2011 Stem gall on canyon live oak (Quercus chrysolepis).
Stem gall on canyon live oak (Quercus chrysolepis).