Guénaoui, Y., Dehliz, A., Alouach, M., & Meskine, S. 2003 The damage caused by the diaspidid Parlatoria zyziphi Lucas on citrus groves in the Northwest part of Algeria.. Bulletin OILB/SROP (Sect. Reg. Ouest Palearctique) 26(6): 135.

Notes: [Conference proceedings: 'Integrated control in citrus fruit crops'. Proceedings of the IOBC/WPRS Working Group, held in Valencia, Spain, 6-8 November, 2002 Published by International Organization for Biological and Integrated Control of Noxious Animals and Plants (OIBC/OILB), West Palaearctic Regional Section (WPRS/SROP), Dijon, France, Garcia-Marí, F. (Ed.)] The diaspidid Parlatoria zyziphi [P. ziziphi] is one of the major pests for the Algerian citrus cultivation. The present contribution is part of a large study on the population dynamics of the diaspidid. It was conducted for three years in unsprayed orchards in the vicinity of Mostaganem in northwest Algeria, and heavy infestations were recorded during the summer. Results were expressed as the average number of insects per cm2. A high density of P. zyziphi was influenced by cultural practices. Parasitoids were recorded and their impact reached 30%.