diseased red currant leaves, attacked by aphids

agriculture animal animals aphid aphididae aphids arrangement attack attacked background bad biology botany branch branches bush close closeup colony color colour condition currant cut cutout damage damaged deform deformation deformed destroy destruction detail disease diseased diseases foliage gardening green greenflies greenfly ill illness indoor indoors infestation insect insecticide insects invasion isolated leaf leaves lice macro natural nature nobody only out parasitic pest pests plant plants problem red redcurrant shrub studio swarm twig twigs unwell white