This book calls on the collaboration of the top specialists on selected groups of Iberian fauna. All 70 of these specialists have an excellent grasp of the diversity present in the vast world of arthropods. The book has a twofold objective. First, it aims to serve as an informative base for practical guides on this discipline at the university level of education. Second, for those desiring an independent initiation on this material, it represents a basic instrument for providing current information as well as taxonomic identification up to the level of family .