Besbicus mirabilis (Hymenoptera: Cynipidae)   (Synonym: Cynips mirabilis)
Speckled Gall Wasp
Honeydew Creek Campground, King Range National Conservation Area, Humboldt County, California
August 5, 2007

On Quercus garryana (Oregon oak). Gall is cut open to show the fibers around the central chamber that houses the wasp larva.