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The obtained results revealed that the parasitoid D.rapae could be recommended as biological control agents against this aphid B. brassicae under Egyptian conditions.The results of biological studies on the three coccinellid predators assured the possibility of their rearing massively on the natural prey .It is considered the first biological study of the predator E. nigromaculatus .The results showed clearly the possibility of using the coccinellid predatory insect as a biological control agent in an integrated program for controlling piercing sucking pests in cabbage crop.