Crystalline Gall Wasp gall mass with parasitoid - Feron crystallinum - Mt Diablo State Park, Contra Costa County, California, USA September 8, 2007 Size: 25-30mm (gall mass)
On underside of Quercus douglasii (blue oak) leaf. This mass of galls engulfs the leaf and has a parasitoid wasp ready to take aim with her ovipositor into one of the galls.
Contributed by Joyce Gross on 12 September, 2007 - 2:53am |