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Photo#364022
Split Twig Gall Wasp gall - Dryocosmus asymmetricus

Split Twig Gall Wasp gall - Dryocosmus asymmetricus
Angelo Coast Range Reserve, Mendocino County, California, USA
April 23, 2008
On Quercus chrysolepis (canyon live oak) stem. Larval chambers are 2mm each.