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Tan, flared bell shaped gall on the underside of a leaf. "Two generations per year, each producing completely different galls. The unisexual summer generation creates stem galls that are hard, round, and spiny, up to 3cm in diameter. The bisexual spring generation creates mushroom-shaped galls on the leaves, up to 7mm wide and tall."
Coast Live Oak in riparian, oak forest. "Found on Quercus agrifolia (coast live oak) and Quercus wislizenii (interior live oak)."
Same gall type as my other spotting: http://www.projectnoah.org/spottings/138...
Spotted on Oct 23, 2013
Submitted on Oct 24, 2013