New York Natural Heritage Program
Delaware River Clubtail
Gomphus septima delawarensis (Donnelly and Carle, 2000)

Bick, G.H. 2003. At-risk odonata of conterminus United States. Bulletin of American Odonatology 7(3):41-56
Carle, F.L. 1994. A survey of the Odonata of the Delaware River and its tributaries. US Fish and Wildlfie Service, NJ.
Donnelly, T.W. 1993. Impoundment of rivers: sediment regime and its effect on benthos. Aquatic Conservation: Marine and Freshwater Ecosystems 3:331-342.
Donnelly, T.W. 1999. The dragonflies and damselflies of New York. Prepared for the 1999 International Congress of Odonatology and First Symposium of the Worldwide Dragonfly Association. July 11-16, 1999. Colgate University, Hamilton, New York. 39 pp.
Donnelly, T.W. and F.L. Carle. 2000. A new subspecies of Gomphus (Gomphurus) septima from the Delaware River of New Jersey, New York, and Pennsylvania (Odonata, Gomphidae). International Journal of Odonatology 3(2):111-123.
Keys, Jr.,J.; Carpenter, C.; Hooks, S.; Koenig, F.; McNab, W.H.; Russell, W.;Smith, M.L. 1995. Ecological units of the eastern United States - first approximation (cd-rom), Atlanta, GA: U.S. Department of Agriculture, Forest Service. GIS coverage in ARCINFO format, selected imagery, and map unit tables.
Krotzer, S. 2002. Gomphus septima rediscovered in Alabama. Argia, 14(2):10.
NatureServe. 2005. NatureServe Central Databases. Arlington, Virginia. USA
Paulson, D. 2011. Dragonflies and damselflies of the east. Princeton University Press, Princeton, New Jersey, USA.
Soltesz, Ken. 1993. Dragonfly studies on the Delaware River. Argia 5(2): 2-3.
Westfall, M.J. 1956. A new species of Gomphus from Alabama (odonata). Quarterly Journal of the Florida Academy of Sciences 19 (4): 251-258.
White, Erin L., Jeffrey D. Corser, and Matthew D. Schlesinger. 2010. The New York Dragonfly and Damselfly Survey 2005-2009: distribution and status of the odonates of New York. New York Natural Heritage Program, New York State Department of Environmental Conservation. Albany, NY. 450 pp.


Funding from the NYSDEC Hudson River Estuary Program made the initial development of these guides possible.

Additional support has been provided by

Website architect: Andrew Blick.
Modifications and updates: David Marston and Matthew Buff.

Global data are provided by NatureServe and its Natural Heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.

New York Natural Heritage Program
625 Broadway, 5th Floor, Albany, NY 12233-4757
Phone: (518) 402-8935 Fax: (518) 402-8925

Please send comments and suggestions to: acris [at] nynhp [dot] org

To continue building a comprehensive, up-to-date database of information on the locations of rare species in New York State, we invite your contributions. If you have information on a rare species, please fill out our Online Rare Species Reporting Form. If you have information on ecological communities, please fill out a Natural Heritage Reporting Form (two-page MS Word document).

This guide was authored by: Jeffrey D. Corser
Information for this guide was last updated on: 08-Aug-2017