Hayward, K.J. 1939 [The main parasites of citrus and means of control.] Principales parasitos de los citrus y forma de combatirlos.. BoletÃn de Frutas y Hortalizas (Buenos Aires) 4(39): 288 pp.
Notes: Scale species reviewed include Chrysomphalus dictyospermi, Aonidiella aurantii, C. aonidum, C. paulistus, C. scutiformis, Lepidosaphes beckii,Prontaspis citri, Pinaspis aspidistrae, Parlatoria zizphus, P. oleae, Aspidiotus perniciosus, A. hederae, Hemiberlesia camelliae, Diaspidiotus lataniae, Mesolecanium deltae, Saissetia oleae, S. hemisphaerica, Coccus hesperidum, Lecaniodiaspis dendrobii, Lecanium perinflatum, Icerya purchasi, I. subandina, Orthezia praelonga, Pulvinaria flavescens, Pseudococcus citri, P. longispinus, P. maritimus and P. comstocki; parasites; chemical control recommendations.