_____________________________________________________________________________________________________ *Corresponding author: E-mail: raniarashwan@ymail.com; E-mail: esmatfarouk@yahoo.com; Annual Research & Review in Biology 21(6): 1-7, 2017; Article no.ARRB.37841 ISSN: 2347-565X, NLM ID: 101632869 Susceptibility of Eggplant Cultivars to Sap-Sucking Insect Pest’s Infestation Rania S. Rashwan 1,2* and Emad A. M. Gado 2 1 Department of Plant Protection, Faculty of Agriculture, Ain Shams University, Cairo, Egypt. 2 Department of Biology, Faculty of Science, Taif University, Taif, Kingdom of Saudi Arabia. Authors’ contributions This work was carried out in collaboration between both authors. Author RSR designed the study, performed the statistical analysis, wrote the protocol, and wrote the first draft of the manuscript. Author EAMG managed the analyses of the study and managed the literature searches. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/ARRB/2017/37841 Editor(s): (1) Jin-Zhi Zhang, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, China. (2) George Perry, Dean and Professor of Biology, University of Texas at San Antonio, USA. Reviewers: (1) Nigar Yarpuz-Bozdogan, University of Cukurova, Vocational School of Technical Sciences, Turkey. (2) Aba-Toumnou Lucie, University of Bangui, Central African Republic. (3) Ana-Maria Andrei, Research Development Institute for Plant Protection, Romania. (4) Mohamed Braham, University of Sousse, Tunsia. Complete Peer review History: http://www.sciencedomain.org/review-history/22557 Received 30 th October 2017 Accepted 28 th December 2017 Published 2 nd January 2018 ABSTRACT The present study was carried out to study the changes in the population density of three main pests attacking two varieties of eggplant (Solanum melongena). The three insect pests were Bemisia tabaci (Genn), Aphis gossypii (Glover) and Empoasca decipiens (Paoli). The seasonal changes in the population density for three main pests formed two peaks during 2012/2013 season on two varieties. The first peak for B. tabaci was recorded on (classic variety) during the first weak December, the second peak was recorded at the first week of March. For (Sicilian variety) the first peak occurred on the second week of December while second peak was recorded on the end of February. The first peak for A. gossypii on (Classic v.) occurred through mid of December and the second formed on mid of arch. The second peak was recorded through mid of March. For (Sicilian v.) the first and second peak were stated at the end December and at the end of February respectively. The population density of E. decipiens of the first peaks Original Research Article