none Animals and man; Control; Biological control; Nutrition; Diet; Feeding; Carnivorous feeding; Predation; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships; Ecology; Population dynamics; Land and freshwater zones; Palaearctic region Insecta; Control of; Predation effects on Hemiptera, control potential; Prey; Hyalopterous pruni (Hemiptera); Predator prey interactions; Population density relationships, hemipteran prey; Population density; Hemipteran prey relationships; Iraq; Baghdad; Predation of Hemiptera, control implications Aphidius colemani (Braconidae); Control of; Hyalopterous pruni (Hemiptera); Parasite effect on Hemiptera, control potential; Hemipteran hosts; Hyalopterous pruni; Host parasite relationships; Population density relationship, hemipteran host; Population density; Hemipteran host relationship; Iraq; Baghdad; Parasitism of Hemiptera, control implications Hyalopterous pruni (Aphidoidea); Control by; Natural parasites & predators, control potential; Predator prey interactions; Population density relationships, insect predators; Hymenopteran parasites; Aphidius colemani; Plant hosts; Prunus armeniaca (apricot); Host parasite relationships, hymenopteran parasite; Prevalence; Plant host; Population density; Insect parasite & predator relationships; Predators; Insecta; Population density relationship, control implications; Iraq; Baghdad; Plant host infestation, effects of parasites & predators