In this book, contributors focus on the reproductive behaviour of insects. The topics they discuss range from mate finding, host selection and oviposition behaviour to the competition for resources and the behaviour of feeding larvae. The papers reflect both a diversity of approach and differing degrees of conviction as to the relevance of evolutionary theory to the study of insect population. The aim of the book is to encourage the reader to think more critically about the evolution of behaviour, and in particular about the importance of small differences in individual behaviour within natural populations.