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Andricus quercuslanigera
(Hymenoptera: Cynipidae)
Adult wasps have emerged from these oak galls; three exit holes are visible in this photo. This leaf has multiple galls attached to the midrib vein, each of which contained one wasp. The host oak is Quercus virginiana (southern live oak). This oak is not native in California but is sometimes planted in parks and other locations in the state. The galls are made by wasps also not native to California. Both the oak and wasp are native to the eastern U.S. |