The insect olfactory system has become a very important model of sensory function, morphology and development. Intense research in several insect orders has yielded a large amount of data. This book provides a comprehensive overview, with special emphasis placed on pheromone-specific and host-related detection and processing of odour information. A valuable information source not only for researchers and students in the field of insect olfaction but also for those working on sensory systems, in entomology, neurophysiology, and pest control.