Generations, preferable leaf surface and horizontal distribution of Aonidiella aurantii (Maskell) on navel orange trees and its associated parasitoid, Aphytis lingnanensis compere in Ismailia governorate, Egypt [electronic resource].

Includes references.

Field experiments along two successive years from June 2011 to May 2013 were conducted on California red scale insect, Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae) and its associated parasitoid, Aphytis lingnanensis Compere (Hymenoptera: Aphelinidae) on navel orange trees at EI-Qasaseen Research Station farm, EI-Qasaseen district, lsmailia Governorate, Egypt. The annual number of generations, their durations, preferable leaf surface and horizontal distribution of the insect and its associated parasitoid were considered. The obtained results revealed that A. aurantii had two to three annual generations on navel orange trees, the generation period were varied from three to five months. California red scale insect, A. aurantii and the parasitoid, A. lingnanensis preferred the upper leaf surface than the lower one. Mathematical calculation showed that A. aurantii and its associated parasitoid were concentrated on the northern east and southern directions of the examined trees.

Summary in Arabic.

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