Omer-Cooper, J., & Whitehead, G.B. 1950 Studies on the biological control of red scale in the Eastern Cape Province.. The Citrus Grower 195: 3,12.

Notes: Discussion of Habrolepis rouxi, Aphytis chrysomphali, Metaphycus helvolus feeding on Aonidiella aurantii in Southern Rhodesia (now Zimbabwe).