Dryocosmus minisculus, hatched from pumpkin gall on upper leaf surface of California Live Oak, Quercus agrifolia. Laguna Laurel trail, Laguna Coast Wilderness Park, Laguna Beach, Orange County, CA. 3/18/10. © Peter J. Bryant.

Pumpkin Gall Wasp

Dryocosmus minisculus

(Tentative ID based on gall type)

Hymenoptera: Cynipidae

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Dryocosmus minisculus, hatched from pumpkin gall on upper leaf surface of California Live Oak, Quercus agrifolia. Laguna Laurel trail, Laguna Coast Wilderness Park, Laguna Beach, Orange County, CA. 3/18/10. © Peter J. Bryant.
1.8mm diam, on upper leaf surface of California Live Oak, Quercus agrifolia. Laguna Laurel trail, Laguna Coast Wilderness Park, Laguna Beach, Orange County, CA. 3/15/10. © Peter J. Bryant.
The following wasp hatched from this gall but is not the gall inducer:

Pteromalid Wasp