Riehl, L.A., Brooks, R.F., McCoy, C.W., Fisher, R.W., & Dean, H.A. 1980 Accomplishments toward improving integrated pest management for citrus.. New Technology of Pest Control. Wiley-Interscience New York 500 pp.
Notes: Examples of formerly very serious citrus pests in the U.S. that have been reduced and are being permanently maintained at subeconomic levels by purposely imported natural enemies are: Aonidiella aurantii, A. citrina, Chrysomphalus aonidum, Icerya purchasi, Lepidosaphes beckii, Pseudococcus fragilis and Saissetia oleae. Other species mentioned include Coccus hesperidum, C. pseudomagnoliarum and Parlatoria pergandii.