Gutierrez, A.P., Caltagirone, L.E., & Meikle, W. 1999 Evaluation of results: Economics of biological control.. Handbook of Biological Control: Principles and Applications of Biological Control. Academic Press San Diego et al. 1046 pp.

Notes: This chapter attempts to counteract the prevailing opinion among farmers that they must use pesticides regularly or perish, with a discussion of the economic benefits of naturally occurring biological control. Icerya purchasi control by Rodolia cardinalis and Cryptochetum iceryae is discussed at length. Other host species listed in a table include Antonina graminis, Aspidiotus destructor, Parlatoria oleae, Planococcus kenyae, Pseudococcus fragilis and Saissetia oleae.