• Introduction; Insect adaptation to environmental changes; The course of diapause; The diapause syndrome; Environmental regulation of seasonal cycles; Seasonal adaptations - special cases; Variability and genetics of seasonal adaptations; Evolution of seasonal cycles; Seasonality, life-history evolution, and speciation; Seasonality and insect pest management.

'A valuable addition to existing volumes in behaviour ecology and physiological ecology...The book is easy to read and to use for a reference, because of the many sections and subsections and because of three excellent indices. The definitions are well conceived and are stated in clear English...This volume is absolutely packed with information.' BioScience (November 1987)