disease of maple leaves close-up. damage to gall mites. phyllocoptes fockeui. sick leaf of acer saccharinum infected

maple gall eriophyidae disease mite vasates sick damage leaves spot silverleaf plant pink pest parasite mites macro leaf foliage broken branch warts tree background nature insect pathogen tick illness problem bacteria fungi galls agriculture summer gardening growth danger closeup organic pathology pesticide detail diseased protection colony