Keywords: Knopper gall on oak (Quercus robur) induced by Andricus quercuscalicis (gall wasp), Arnhem, the Netherlands.jpg 51 945376 5 852365 en Knopper gall on oak Quercus robur induced by Andricus quercuscalicis gall wasp Arnhem the Netherlands nl Knoppergal op Zomereik Quercus robur veroorzaakt door de agame generatie van de galwesp Andricus quercuscalicis Arnhem Nederland 2012-08-25 own Bj schoenmakers cc-zero Andricus quercuscalicis Uploaded with UploadWizard Diseases and disorders of Quercus Galls on Quercus Galls |