Bénassy, C. 1959b [Complementary use of biological and chemical control against diaspine cochineal: Pseudaulacaspis pentagona Targ. and Quadraspidiotus perniciosus Comst.]. Comptes rendus du IVe Congrès International de Lutte contre les Ennemis des Plantes, Hambourg Vol. 1: 867-872.

Notes: [Original title: Emplois complémentaires de la lutte biologique et de la lutte chimique contre les cochenilles-diaspines: Pseudaulacaspis pentagona Targ. et Quadraspidiotus perniciosus Comst. Conference held in 1957.] Species mentioned that have renewed outbreaks after a measure of control include Aonidiella aurantii, Chrysomphalus ficus, Coccus hesperidum, Icerya purchasi, Lecanium corni, L. pruinosum and Quadraspidiotus forbesi. Various combinations of treatments were evaluated against P. pentagona and Q. perniciosus.