rosy leaf-curling apple aphids (dysaphis devecta), apple tree pest. detail of affected leaf

colony insecticide leaf macro disease nature tree insect pathology garden pest plant aphids problem protection agriculture bug natural louse summer gardening stem aphid fruit flora environment biology closeup spring sick spray apple lice pesticide growth danger branch rosy close seasonal control background affected green sucking agricultural aphidoidea season treatment damage leaf-curling dysaphis devecta detail pest leaf