About the book:

In this 4th volume, 128 species & 19 new genera are described in 15 contributions, of which 13 deal with insects (Collembola, Dictyoptera, Orthoptera, Homoptera, Hemiptera, Coleoptera, Diptera and Hymenoptera), and 2 deal with fish and lizards, respectively. The systematic and biogeographic relations of over 600 taxa are discussed, and illustrated with 800 figures and 3 colour plates. Several of these papers also discuss population problems, environmental issues and behavioural problems.