ARNETT, R. H., Jr. 1967. The Beetles of the United States (a Manual for Identification). Ann Arbor, Michigan: American Entomological Institute, 1112 pp.

BORROR, D. J., C. A. TRIPLEHORN, and N. F. JOHNSON. 1989. Odonata. Pp. 187-204 in An Introduction to the Study of Insects. Saunders College Publishing, New York.

BROTHERS, D. J. 1975. Phylogeny and classification of the aculeate Hymenoptera, with special reference to Mutillidae. University of Kansas Science Bulletin, 50(11): 483-648.

CARVER, M., G. F. GROSS, and T. E. WOODWARD. 1991. Hemiptera, pp. 429-509 in CSIRO, The Insects of Australia. Cornell University Press, Ithaca, New York.

CROWSON, R. A. 1968. The Natural Classification of the Families of Coleoptera. Oxford, England: E. W. Classey, 159 pp.

GALL, W. K. 1994. Phylogenetic studies in the Limnephiloidea, with a revision of the world genera of Goeridae (Trichoptera). Ph.D. dissertation, University of Toronto, Toronto.

KROMBEIN, K. V., P. D. HURD, Jr., D. R. SMITH, and B. D. BURKS. 1979. Catalog of Hymenoptera in America North of Mexico, 3 volumes, Washington, D.C.: Smithsonian Press, 2735 pp.

LAWRENCE, J. F. 1982. Coleoptera, pp. 482-553 in Synopsis and Classification of Living Organisms, ed. S. Parker. New York: McGraw-Hill.

MCALPINE, J. F., B. V. PETERSON, G. E. SHEWELL, H. J. TESKEY, J. R. VOCKEROTH, and D. M. WOOD. 1981-1987. Manual of Nearctic Diptera. Volume 1, Monograph Number 27 (1981, 674 pp.), and Volume 2, Monograph Number 28 (1987, 675-1332 pp.), Research Branch, Agriculture Canada.

PETERS, W. L., and I. C. CAMPBELL. 1991. Ephemeroptera, pp. 279-293 in The Insects of Australia: a Textbook for Students and Research Workers. Carlton, Victoria, Melbourne University Press.

RASNITSYN, A. P. 1980. Origin and evolution of the Hymenoptera (in Russian). Tr. Paleontol. Inst., 174: 1-190.

SCHUH, R. T. 1979. Review of Cobben, Evolutionary trends in Heteroptera. Systematic Zoology, 28: 653-656.

STARK, B. P., S. W. SZCZYTKO, and R. W. BAUMANN. 1986. North American Soneflies (Plecoptera): Systematics, distribution, and taxonomic references. Great Basin Naturalist, 46: 383-397.

VON DOHLEN, C. D. and N. A. MORAN. 1995. Molecular phylogeny of the Homoptera: a paraphyletic taxon. Journal of Molecular Evolution, 41: 211-223.

WEAVER, J.S. III and H. Malicky. 1994. The genus Dipseudopsis Walker from Asia (Trichoptera: Dipseudopsidae). Tijdschrift voor Entomologie, 137: 95-142.

WEAVER, J.S. III & J.C. Morse. 1986. Evolution of feeding and case-making behavior in Trichoptera. Journal of the North American Benthological Society, 5(2): 150-158.

WHEELER, W. C., R. T. SCHUH, and R. BANG. 1993. Cladistic relationships among higher groups of Heteroptera: congruence between morphological and molecular data sets. Entomologica Scandinavica, 24: 121-137.