Cilliers, C.J. 2001a Chrysomphalus aonidum (L.). Circular purple scale.. Pests and Beneficial Arthropods of Tropical and Non-citrus Subtropical Crops in South Africa. ARC-Institute for Tropical and Subtropical Crops Nelspruit, South Africa 525 pp.

Notes: Historical review, distribution, economic importance, host plants, biology, ecology, seasonal history, biological and chemical control, and illustrations of Ceroplastes brevicauda (citrus wax scale) and C. destructor (white wax scale).