Providing an introduction to parasitoid natural history and taxonomy, this book asks how a consideration of evolutionary biology can help us understand the behavior, ecology, and diversity of the approximately one to two million species of parasitoid found on earth. It also discusses the theoretical background to the subject. "Godfray gives us an interesting and complete review of the taxonomy, evolution, and natural history of parasitoids ... [however] the true value of this book lies in its synthesis of theoretical and empirical aspects of parasitoid biology."