Habib, A., El-Kady, E.A., Rawhy, S.H., & Soliman, A.F. 1973 Control of the citrus waxy scale insect, Ceroplastes floridensis Comstock and the purple scale insect, Lepidosaphes beckii (Newman).. Bulletin of the Entomological Society of Egypt 7: 133-141.

Notes: Chrysomphalus ficus (the black scale insect) is also mentioned as one that attacks citrus. Chemical control is recommended.