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Photo added 2012-10-14

Hymenoptera: Cynipidae
Bristly Pear-gall Wasp
Angelo Coast Range Reserve, Mendocino County, California
June 17, 2012

Leaf gall on canyon live oak (Quercus chrysolepis). This gall is pictured in Russo 2012 Plant Galls Addendum (Page 24) but the wasp that causes the gall has never been scientifically described. It may be a new species, or a spring generation of a known species.