Integrated taxonomy, as understood by the authors, brings together all available knowledge regarding many aspects of a single group of species so as to form a comprehensive picture of the degree and kind of similarities and differences that are to be found within such a proup. Comparative studies of developmental rates, egg physiology, nutrition, embryology, nymphal development, cytology, and minute anatomy are being applied to three species-complexes of crickets: the Gryllus complex of Sorth America, the Teleogryllus complex of eastern Asia and Australia, and the Acheta complex of North Africa and Southwestern Asia.