CONTENTS: 1. History of Entomology 2. Classes of Arthropoda 3. General body organization of insects 4. Insect Head, Mouthparts 5. Insect Antennae 6. Insect Vision 7. Insect Thorax and Legs 8. Insect Abdomen 9. Insect metamorphosis 10. Type of Egg, larva and pupa 11. Anatomy and physiology of different systems 12. Insect Sense organs 13. Insect Systematic 14. Apterygote and exopterygote insect order 15. Exopterygote insect order 16. Endopterygote insect order. Appendix.