1. Predatory insects collection methods -- 2. Distribution and Diversity in agro-ecosystems -- 3. Identification of various insect predators -- 4. General Ecology -- 5. Egg Biology -- 6. Immature stages biology -- 7. Adults Biology of various orders -- 8. Polymorphisms -- 9. Influence of Ecological/climatic change -- 10. Predation ethology of various orders -- 11. Mating behavior and reproductive biology -- 12. Offense and defense mechanism -- 13. Venomous and other body fluids -- 14. Prey record of various predators -- 15. Mass Production -- 16. Bioefficacy under laboratory -- 17. Bioefficacy evaluation under Pot condition/Screen House/Polyphagous -- 18. Controlled field cage and Field evolution -- 19. Commercially available Predators -- 20. Bio-safety to synthetic pesticides -- 21. Biocompatibility of Biopesticides to Predatory Insects -- 22. Species and subject index.