Part I. Insect Migration in Relation to Weather and Climate: 1. Long-range insect migration in relation to climate and weather: Africa and Europe D. E. Pedgley, D. R. Reynolds and G. M. Tatchell; 2. Insect migration in North America: synoptic-scale transport in a highly seasonal environment S. J. Johnson; 3. Migration of the brown planthopper Nilaparvata lugens and the white-backed planthopper Sogatella furcifera in East Asia: the role of weather and climate R. Kisimoto and K. Sogawa; 4. Migration of the oriental armyworm Mythimna separata in East Asia in relation to weather and climate. I. Northeastern China R. -L. Chen, Y. -J Sun, S. -Y. Wang, B. -P. Zhai and X. -Y. Bao; 5. Migration of the oriental armyworm Mythimna separata in East Asia in relation to weather and climate. II. Korea J. -H. Lee and K. -B. Uhm; 6. Migration of the oriental armyworm Mythimna separata in East Asia in relation to weather and climate. III. Japan K. Hirai; 7. Insect migration in an arid continent. I. The common armyworm Mythimna convecta in eastern Australia G. McDonald; 8. Insect migration in an arid continent. II. Helicoverpa spp. in eastern Australia P. C. Gregg, G. P. Fitt, M. P. Zalucki and D. A. H. Murray; 9. Insect migration in an arid continent. III. The Australian Plague Locust Chortoicetes terminifera and the native budworm Helicoverpa punctigera in Western Australia K. J. Walden; Part II. Adaptions for Migration: 10. Migratory potential in insects: variation in an uncertain environment A. G. Gatehouse and X. -X. Zhang; 11. Insect migration in heterogeneous environments K. Wilson; 12. The regulation of migration in Helicoverpa armigera J. Colvin; 13. Physiological integration of migration in Lepidoptera J. N. McNeil, M. Cusson, J. Delisle, I. Orchard and S. S. Tobe; 14. Aerodynamics, energetics and reproductive constraints of migratory flight in insects R. Dudley; Part III. Forecasting Migrant Pests: 15. Operational aspects of forecasting migrant insect pests R. K. Day and J. D. Knight; 16. Geographic information systems and remotely sensed data for determining the seasonal distribution of habitats of migrant insect pests T. P. Robinson; 17. Forecasting systems for migrant pests. I. The brown planthopper Nilaparvata lugens in China B. -H. Zhou, H. -K. Wang and X. -N. Cheng; 18. Forecasting systems for migrant pests. II. The rice planthoppers Nilaparvata lugens and Sogatella furcifera in Japan T. Watanabe; 19. Forecasting systems for migrant pests. III. Locusts and grasshoppers in West Africa and Madagascar M. Lecoq; Part IV. Overview and Synthesis: 20. Forecasting migrant insect pests J. I. Magor; 21. Insect migration: a holistic conceptual model V. A. Drake, A. G. Gatehouse and R. A. Farrow; Index.