In this study, the effects of two different Pyrethroid group insecticides used in orchards on mortality of Itoplectis maculator (Fabricius, 1775) (Ichneumonidae, Hymenoptera), the parasitoid of the leafroller pests Archips rosana (Linnaeus, 1758) (Tortricidae, Lepidoptera), were evaluated. Method: A. rosana pupae were exposed to different concentrations of LCT (Lambda-chyhalothrin) and CYP (Alphacypermethrin) and their development were observed until adult stage. Some of these pupae were attacked by beneficial organisms. Each pupae dipped in sterile Petri dishes (10 cm diameter) in laboratory conditions (25 ±20C and % 50±5 relative humidity) was maintained using honey-water (1:1 ratio) absorbed on cotton pieces and sterile cherry leaves. Experiments were performed in five replicates and observed deaths were recorded for 7 days