Abul-Nasr, S., Swailem, S.M., & Ahmed, N.M. 1975b Seasonal fluctuations of the citrus red scale insect, Aonidiella aurantii (Maskell) in certain regions of lower Egypt (Hemiptera, Homop.: Diaspididae).. Agricultural Research Review 53: 149-159.

Notes: The citrus red scale insect, Aonidiella aurantii (Maskell) has increased recently to such an extent that it was found all over Egypt. The insect population fluctuated to reach 3-4 annual peaks. The highest level of population density took place during April in Qalyobica, during September in Menofeia and Giza, and during May/July in Gharbeia and Sharkeia. The population reached its minimum level in winter in most of the studied regions. Adult males seem to settle down on the leaves upper surfaces, and the females on the lower surface. The development of this insect was accelerated under high temperature and low relative humidity. The rate of parasitism was found to reach its highest levels during the times when the diaspidid was found in low numbers, as its rate ranged between 55-88.2% in the different regions.