DeBach, P. 1971 Fortuitous biological control from ecesis of natural enemies.. Entomological essays to commemorate the retirement of K. Yasumatsu. Hokuryukan Pub. Co. Tokyo 389 pp.

Notes: Examples of a number of diaspine scale insects by various species of Aphytis are documented and discussed with respect to biological control policy and practice. Reasons for ecesis are discussed. Species mentioned include Aonidiella aurantii, A. citrina, Aspidiotus destructor, A. hederae, A. juglansregiae, Chrysomphalus dictyospermi, C. ficus, Diaspis echinocacti, Hemiberlesia cyanophylii, H. lataniae, H. rapax, Lepidosaphes beckii, L. ulmi, Parlatoria pergandii, Pseudaonidia duplex and Quadraspidiotus perniciosus as target pests.