MacPhee, A.W., Caltagirone, L.E., van de Vrie, M., & Collyer, E. 1976 Biological control of pests of temperate fruits and nuts.. Theory and Practice of Biological Control. Academic Press New York 788 pp.

Notes: Lecanium coryli, Lepidosaphes ulmi, Parlatoria oleae, Phenacoccus aceris and Pseudococcus maritimus are discussed.