Hart, W.G. 1980 Some biological control successes in the southern United States.. Proceedings of the International Society of Citriculture 1978. Griffith, NSW, Australia

Notes: Successful biological control by introduced parasites is reported for the following pests: purple scale (Lepidosaphes beckii) by Aphytis lepidosaphes; Florida red scale (Chrysomphalus aonidum) by Aphytis holoxanthus; citrus blackfly (Aleurocanthus woglumi) by Amitus hesperidum, Prospaltella opulenta and P. clypealis; California red scale (Aonidiella aurantii) by Aphytis lingnanensis and Aphytis melinus on citrus; olive scale (Parlatoria oleae) by Coccophagoides utilis and Aphytis maculicornis on olives; and walnut aphid (Chromaphis juglandicola) by Trioxys pallidus on walnuts.