Synopsis This textbook is the definitive guide to the study of insects; a group of animals that represent over half of the planet's biological diversity. Completely updated and expanded, this new edition examines all aspects of insect biology including anatomy and physiology, ecology and evolution of insects, insect behaviours such as sociality, predation, parasitism and defense, medical and veterinary entomology and methods of collection, preserving and identifying insects, the methods and results of studies of insect phylogeny and a new review of insect evolution and biogeography. It also includes expanded sections on species diversity, social behaviour, pest management, aquatic entomology, parasitology and medical entomology. Successful strategies in insect conservation are also covered for the first time, reflecting the increasing threat to natural ecosystems from environmental changes.