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For galls not in Gagne's book you can try Ron Russo's Field Guide to Plant Galls of California and Other Western States, or failing that, send specimens and/or photos to Gagne at the Smithsonian. The picture is too small for me to see all the details, but the wasp with the really long ovipositor is a torymid--unfortunately I don't know of anyone in the world who will examine specimens of those--and the bottom center one looks like a platygastrid (if so, you could send it to Peter Neerup Buhl in Denmark to ID). I might be able to say more about the others if I could see a larger version of this.