The parasitic Hymenoptera are a highly successful and important group of insects comprising probably over a million species. Despite the vast amount of research that has been carried out on the group over the last 100 years or so, there are still many unexplained aspects of their biology. In recent years interest in the parasitic Hymenoptera has grown as a result of the increasing demand for biological methods for pest control and their possible use as natural enemies. Parasitic wasps are also tremendously important in research on pollution dynamics and on host-parasite interactions.
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This volume in the Tertiary Level Biology series fills a gap in the taxonomic literature by providing a comprehensive survey of the arguments and techniques of systematics as they are applied today to all groups of organisms. It covers the principles of nomenclature and classification, the logic and practice of cladistics, and, in a series of chapters, considers the scope, application, benefits and drawbacks of a wide range of sources of phylogenetically informative character systems, from behaviour and morphology to DNA. There is an emphasis on modern aspects of the subject.