This volume deals with the Heteroptera aquatica, or water bugs, known from Malesia, a region holding almost 1000 species belonging to seventeen families. The book includes keys to all families and genera, and provides information on their taxonomy, morphology, biology, distribution and economic importance. A checklist of the species recorded from Malesia and nearby areas, with references to original descriptions of all taxa, is included. The book is illustrated by more than 500 drawings and 35 distribution maps. A glossary explains the technical terms is employed. An extensive list of references will enable readers to trace all pertinent taxonomic literature published up to the end of 2003.