Abstract
Field trials were undertaken to determine the relative abundance of Myzus persicae (Sulzer) and its natural enemies on potatoes in Upper Egypt. The green peach aphid appeared in both winter and summer plantations. The population densities of aphids were significantly higher during summer growing seasons than that of the winter. Number of predators associated with the aphid in summer plantations also was higher than that in the winter plantations. C. undecimpunctata was the predominant predator making up more than 33% of the total predator complex.