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Notes: [The papers in this book are an outgrowth of a symposium held during the XV International Congress of Entomology in Washington, D.C. in 1976.] Aonidiella aurantii, A. citrina, Aulacaspis rosae, Carulaspis juniperi, Chionaspis pinifoliae, Diaspidiotus abietis, Icerya purchasi, Quadraspidiotus perniciosus and Saissetia nigra are among the species discussed.