de Villiers, E.A., & Van den Berg, M.A. 1987 Soft and wax scales.. Crop Pests in southern Africa, Vol. 2: Citrus and Other Subtropicals. Plant Protection Research Institute, Department of Agriculture and Water Supply Pretoria, S.A. 115 pp.

Notes: Reviews Coccus hesperidum, Pulvinaria aethiopica, Coccus viridis, Gascardia brevicauda, Gascardia destructor, Parasaissetia nigra, Protopulvinaria pyriformis, Pulvinaria psidii and Saissetia oleae; brief field descriptions; description of damage; hosts;