This guide groups caterpillars by their foodplant. The identification is made simple as species are shown where they are likely to be found. Over 500 British and European caterpillars are illustrated with their own foodplants. Opposite each is a miniature of the butterfly or moth into which it will transform. The text discusses the anatomy, life-cycle, enemies, defence, methods, rearing, study and conservation of caterpillars. Every family is described including details of appearance, range, habitat, foodplants, biology and the time of year they can be seen.