Seasonal distribution of Culicini larvae in Greater Cairo

Five species of mosquito larvae were encountered in Greater Cairo, Culex pipiens, Cx. pusillus, Cx. perexiguus, Aedes caspius and Culiseta longiareolata. In parts of Qualyoubia G. Cx. pipiens was the most dominant and the least was Cx. perexiguus. In parts of Giza G. Cx. pipiens was the most dominant and the least was Cs. longiareolata. In Cairo G. Cx. pipiens was the most dominant and the least was Ae. caspius. The overall abundance in a descending order was Cx. pipiens (61.74%), Cs. longiareolata (15.56%), Ae. caspius (15.3%), Cx. pusillus (4.0%) and Cx. perexiguus (3.16%). However, in all sites Cx. pipiens were more in December than in August. The difference in number of Cx. pipiens in one hand and all number of larvae collected on the other hand was non significant.