In California, several predators feed on red scale including the lady beetles, Rhyzobius lophanthae, Chilocorus orbus and Chiliocorus cacti. The naturally occurring parasitic wasps, Aphytis melinus, Aphytis lingnanensis and Comperiella bifasciata also play a part in controlling red scale on citrus but their ability to do so depends on the selective use of insecticides for other pests.
In California, predators like lady beetles, Chilocorus orbus, Chiliocorus cacti, and parasitic wasps (Aphytis melinus, Aphytis lingnanensis, Comperiella bifasciata) help control red scale on citrus but their effectiveness is influenced by the use of insecticides for other pests.