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.

Dr.Ahmed Amin Ahmed Saleh ,Professor assistant in Plant Protection Research Institute ,Dokki,Giza,Egypt,sharing 27 training cycle ,Projects and Conference,Publishing 33 papers and two book about biological control field in Lambert Academic Publishing and member in many journals.