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Two-horned Gall Wasp gall - Dryocosmus dubiosus Las Trampas Regional Park, Contra Costa County, California, USA September 13, 2009 Size: ~3mm
On Quercus kelloggii (black oak). I rarely see leaf galls on Q. kelloggii but this cynipid does gall black oak leaves.
Contributed by Joyce Gross on 7 January, 2010 - 12:17am |
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