The present volume deals with the most fascinating aspects of sensory performance studied in insects, crustaceans and spiders. Arthropods inhabit practically every conceivable ecological niche, and are perfectly adapted to cope with the constraints of their natural habitats. They move on the ground, in water, and in the air. They use visual, olfactory, acoustical, vibratory, and tactile cues for orientation, to recognize and pinpoint their target, their home place, a feeding site, a prey, or a potential mate. Many arthropods use celestial (skylight) and terrestrial (magnetic) compass cues for...