Russo, A. 1987 Remarks on the biological behaviour of Quadraspidiotus perniciosus Comst. in Sicily.. Bollettino del Laboratorio di Entomologia Agraria 'Filippo Silvestri' 43 (1986-Suppl.): 203-208.
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Notes: Journal title continues: Proceedings of the Fifth International Symposium of Scale Insect Studies. Portici (Naples), Italy: June 24-28, 1986. Summary/abstract in: Italian. Abstract: Develops 3 generations per year; overwinters mainly as 1st instar stage with about 10% females; parasite Encarsia perniciosi & predator Hemisarcoptes malus discussed. Keywords: biology; biological control.
