INFLUENCE OF SOME BIOLOGICAL CHARACTORS OF THE HOST FLY PUPAE ON THE PARASITISM AND REPRODUCTION OF NASONIA VITRIPENNIS, [HYM.: PTEROMALIDAE] A PARASITOID OF FLIES

In the laboratory studies, conducted In Taiyuan during 1986-1987, the pupal parasitization of Musca domestica, Lucilia sericsta, Aldrichina grahami and Bercaea haemorrhoidalis by the parasitoid were 8556, 92%, 76% and 14%, respectively. The optimum ratio of the parasitoid to host for controlling the flies was found to be 1:2. 5-5. Female wasps laid their eggs in the host pupae of 1-7 days old, 1-2 days old pupae being the most acceptable for cviposition by the wasps.