Photo 148680, (c) Chris Brown, some rights reserved (CC BY-NC), uploaded by Chris Brown

Attribution © Chris Brown some rights reserved Uploaded by chriswbrown Source iNaturalist Associated observations Photos / Sounds What Willow Apple Gall Sawfly (Euura californica) Observer chriswbrown Date July 16, 2012 04:50 PM PDT Place Point Pinole Trl, Richmond, California, US (Google, OSM) Date Added July 17, 2012 08:16 PM PDT Description The willows were riddled with these small red galls. 3 IDs Research Grade View Sizes small medium large original