Gordh, G. 1977 Biosystematics of natural enemies.. Biological Control by Augmentation of Natural Enemies: Insect and Mite Control with Parasites and Predators. Plenum Press New York 480 pp.

Notes: [Proceedings of a symposium held at the Fifteenth International Congress of Entomology, Washington, D.C., August 19-27, 1976, and other selected papers.] Mention is made of a biological control program for Quadraspidiotus perniciosus in which an incorrect identification caused an erroneous release of parasites intended for control. Aonidiella aurantii is mentioned as an example of a pest in which misidentifications of its natural enemies impaired effective control.