Steinhaus, E.A. 1964 Fundamentals of biological weed control.. Biological Control of Insect Pests and Weeds. Chapman & Hall London 844 pp.

Notes: Dactylopius tomentosus served as prey for Cryptolaemus montrouzieri, which hindered the purpose for which it had been imported, namely, for control of Opuntia sp. Dactylopius confusus and Orthezia annae also mentioned.