Stehr, F.W. 1982 Parasitoids and predators in pest management.. Introduction to Insect Pest Management. John Wiley & Sons New York 577 pp.

Notes: The first dramatic example of the deliberate manipulation of insect natural enemies is mentioned in this chapter as the importation of the vedalia lady beetle, Rodolia cardinalis in California in 1888 to control the cottony-cushion scale, Icerya purchasi on citrus.