The growing emphasis on environmental and food safety has intensified interest in development of biological control as a means of controlling pests. The study was conducted in the croplands of Faisalabad District. Main focus was on predator prey relationships of some of the predominant predator groups belonging to orders Coleoptera and Hymenoptera with some known major pest species in four major crops viz. sugarcane, fodder, wheat and mustard coccinellid and carabid predators and aphid pest species occurring in considerable numbers were selected from the field data to ascertain the probable...