Daane, K.M., Barzman, M.S., & Caltagirone, L.E. 1991 Augmentative release of Metaphycus helvolus for control of black scale, Saissetia oleae, in olives.. Plant Protection Quarterly 2: 6-9.

Notes: Aspidiotus nerii, Parlatoria oleae and Saissetia oleae are the main pests of olive. Natural enemies are discussed.