Twenty six hymenopterus parasitoid species (Hymenoptera : Aphelinidae, Encyrtidae, Platygastridae, Signiphordae) attack twenty mealybug species (Homoptera : Coccoidea : Pseudococcidae) are record­ed in Egypt. The other twenty-five recorded mealybug species in Egypt have no records of parasitoids. Keys to these parasitoids were struc­tured for each species of mealybugs. Identification was based on the tax­onomic characters of the adult female. Detailed figures were constructed for some key characters. List of eighteen parasitoids and eight hyperpa­rasitoids of Egyptian mealybugs are given.