What to read after Morphology and Systematics (Elateroidea, Bostrichiformia, Cucujiformia partim)?

The Handbook of Zoology aims to provide an in-depth treatment of the entire animal kingdom, covering both invertebrates and vertebrates. It publishes comprehensive overviews on animal systematics and morphology as well as extensive coverage of physiology, behavior, ecology and applied aspects of zoological research. Although our knowledge regarding many taxonomic groups has grown enormously over the last decades, it is still the ambition of the Handbook to be comprehensive in the sense that text and references together provide a solid basis for further research. Editors and authors seek a balance between describing species richness and diversity, explaining the importance of certain groups in a phylogenetic context and presenting a review
of available knowledge and up-to-date reference literature. New contributions to the series present the combined effort of an international team of editors and authors, entirely published in English and tailored to the needs of the international scientific community.