The Insects is about how insects function as animals; it brings together basic anatomy and physiology and relates this to behavior. It emphasizes the roles of different functional systems in the context of the whole organism, using studies of many different species as illustrations. Unlike other texts, it does not dwell on classification, but takes an in-depth look at physiology. As such it will provide all biologists with a basic understanding of how insects work. A long-awaited update of a well-established standard text and respected reference work for students and researchers in zoology, entomology and physiology, it has been rewritten throughout, whilst retaining the successful structure of the earlier editions. Improved illustrations have been augmented with electron micrographs, and expanded reference sections will make it a valuable addition to all biologists' bookshelves.