currant branch with leaves affected by gall aphids. red spots on currant leaves close up. vertical crop

affected agricultural agriculture anthracnose aphid arachnid background biology blister branch bush closeup cryptomyzus currant damage dangerous deciduous disease foliage gall gallic garden gardening green infected insect leaf leaves nature object parasite pest problem red redcurrant ribis shrub sick sickness spoiled stain stem struck vertical white young