This issue will contain the proceedings of the 10^th International Symposium on the Chrysomelidae plus additionally submitted papers on all aspects of leaf beetle biology. We invite all workers on Chrysomelidae (sensu lato, i.e. including Megalopodidae, Orsodacnidae and Bruchinae) to contribute to this volume by submitting papers on ecology, phylogeny, morphology, physiology, genetics or any other part of leaf beetle biology.