The Mediterranean fruit fly, Ceratitis capitata (Wiedemann), is recognized as one of the most serious pests of fruits and vegetables, wherever it has become established in tropical and subtropical areas of the world. The Medfly in Egypt occurs more frequently in the North and Delta regions, where the climate is suitable and where there are larger plantations of favourable host fruits such as citrus, peach, apricot, mango and guava. The damage caused by the Medfly, to Egyptian agriculture is increasing due to certain reasons, among which the difficulties to choose suitable means of control in...