1. What is phenotypic plasticity and why is it important? / Douglas W. Whitman and Anurag A. Agrawal -- 2. Phenotypic plasticity and the semantics of polyphenism : a historical review and current perspectives / Michael Canfield and Erick Greene -- 3. Phenotypic plasticity and the origins of diversity : a case study on horned beetles / Armin P. Moczek -- 4. Developmental flexibility, phenotypic plasticity, and host plants : a case study with Nemoria caterpillars / Erick Greene, Michael Canfield and Adam Ehmer -- 5. Phase polyphenism in locusts : mechanisms, population consequences, adaptive significance and evolution / Stephen J. Simpson and Gregory A. Sword -- 6. Density-dependent prophylaxis in insects / Kenneth Wilson and Sheena C. Cotter -- 7. Natural enemy-induced plasticity in plants and animals / Douglas W. Whitman and Leon Blaustein -- 8. Behavioral plasticity to risk of predation : oviposition site selection by a mosquito in response to its predators / Leon Blaustein and Douglas W. Whitman -- 9. Polyphenisms in Lepidoptera : multidisciplinary approaches to studies of evolution and development / P.M. Brakefield and W.A. Frankino -- 10. Causes and consequences of phenotypic plasticity in body size : the case of the yellow dung fly Scathophaga stercoraria (Diptera : Scathophagidae) / Wolf U. Blanckenhorn -- 11. She shapes events as they come : plasticity in female insect reproduction / Jason Hodin -- 12. Temperature dependence of development rate, growth rate and size : from biophysics to adaptation / Gerdien de Jong and Tom M. van der Have -- 13. The developmental-physiological basis of phenotypic plasticity / H. Frederik Nijhout and Goggy Davidowitz -- 14. Wing polymorphism in Gryllus (Orthoptera : Gryllidae) : proximate endocrine, energetic and biochemical mechanisms underlying morph specialization for flight vs. reproduction / Anthony J. Zera -- 15. Evolution of homeostatic physiological systems / H. Arthur Woods -- 16. Acclimation / Douglas W. Whitman -- 17. Heat shock proteins and their role in generating, maintaining and even preventing alternative insect phenotypes / Jason B. Williams, Stephen P. Roberts, and Michelle M. Elekonich -- 18. Learned host preferences / Andrew B. Barron -- 19. Adaptive maternal effects : a case study of egg size plasticity in a seed-feeding beetle / Charles W. Fox and Mary Ellen Czesak -- 20. On the origins of insect hormone signaling / Jason Hodin -- 21. Phenotypic plasticity and evolvability : an empirical test with experimental evolution / Henrique Teotn̤io, Michael R. Rose, and Stephen R. Proulx.