Chapter 1. Historical survey of chronobiology with reference to studies in insects -- Part I. Circadian rhythms -- Chapter 2. General features of circadian rhythms -- Chapter 3. Photic entrainment of circadian rhythms -- Chapter 4. Molecular mechanism of the circadian clock -- Chapter 5. Neural mechanism of the circadian clock -- Chapter 6. Peripheral circadian clock -- Chapter 7. Circa-bidian rhythm -- Chapter 8. Circadian rhythms in social insects -- Chapter 9. Environmental adaptation and evolution of circadian rhythms -- Part II. Other types of insect rhythms and photoperiodism -- Chapter 10. Lunar and tidal rhythms -- Chapter 11. Circannual rhythms -- Chapter 12. General features of photoperiodism -- Chapter 13. Molecular mechanism of photoperiodism -- Chapter 14. Neural mechanism of photoperiodism -- Chapter 15. Seasonal timer in aphids -- Chapter 16. Time-compensated celestial navigation.