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

leaf apple pest tree aphids affected rosy insect insecticide louse macro nature pathology problem growth protection season sick spring stem plant green pesticide garden agriculture environment disease aphid danger damage biology branch colony closeup bug gardening summer background lice attack dysaphis radicola radicicola plantaginea parasitic parasite outdoor leaves infested infestation