Welcome to the NADS site

This website offers a variety of resources on the insect order Diptera, or true flies. The Diptera comprise about 125,000 described species worldwide and are of huge importance to man and the environment. They are much maligned due to their roles as blood feeders, vectors of disease, agents of myiasis, consumers and contaminators of human food, insidious invaders of our homes, and uninvited guests at outdoor activities. However, they are at least as important and beneficial as plant pollinators, food for higher organisms, plant and animal decomposers, and natural and biological control agents.

The Diptera resources offered here are mostly aimed at other dipterists or persons seeking technical information on Diptera. For general information on Diptera, other sites on the Internet should be sought or the references below can be consulted. The available resources on this site are highlighted in the menu bar to the left and reflect the expertise of the contributors to this site.

This site is sponsored by the Dipterology Fund and is open to all North American dipterists for their electronic documents on Diptera, and to other dipterists from other regions who are working on the North American Diptera fauna. We hope that this site will further enhance communication among dipterists and will provide a valuable resource for persons seeking information on the Diptera of our region. Click here for information about submitting web pages to this site.

The North American Dipterists Society (NADS) is an informal organization without a constitution or elected officials. There is an informal meeting each year during the annual meeting of the Entomological Society of America and a biennial field meeting held in different locations throughout North America. Both meetings are organized by volunteers. Information about upcoming meetings and other dipterological news is published twice a year in Fly Times.

Jim O'Hara
Dipterist & webmaster

General references on Diptera

Brown, B.V. 2001. Flies, gnats, and mosquitoes. Pp. 815-826. In Encyclopedia of Biodiversity, Volume 2. Academic Press.

Oldroyd, H. 1964. The natural history of flies. 324 pp. Weidenfeld and Nicolson, London.

Skevington, J.H. and Dang, P.T., eds. 2002. Exploring the diversity of flies (Diptera). Biodiversity 3(4): 3-27.


We gratefully acknowledge the University of Guelph for hosting this website and Dr. Steve Marshall for facilitating this arrangement.

20 June 2003
J.E. O'Hara