A Blue Oak gall - Andricus brunneus Briones park, Contra Costa County, California, USA July 27, 2009
A small cluster gall founnd on the bottom of Blue Oak (quercus douglasii)leaves, i believed caused by a small cynipid wasp, Andricus brunneus
Contributed by michael marchiano on 11 July, 2010 - 2:27pm Last updated 3 December, 2014 - 8:52pm |