Goeden, R.D. 1978 Part II: Biological control of weeds.. Introduced Parasites and Predators of Arthropod Pests and Weeds: A World Review. Agricultural Research Service, United States Department of Agriculture Washington, D.C. 545 pp.

Notes: (Agricultural Handbook No. 480.) Eriococcus orariensis, Dactylopius ceylonicus, D. confusus, D. greenii, D. opuntiae and D. newsteadii are among the scale insects serving to control various weeds.