The USA state and Canada province distribution is based upon the following published papers:
Distribution of mayfly species of North America by R. P. Randolph Mayflies (Ephemeroptera) of the far western United States: Part I: Washington by M. D. Meyer and W. P. McCafferty Mayflies (Ephemeroptera) of the far western United States: Part II: Oregon)by M. D. Meyer and W. P. McCafferty Additions and Emendations to The Mayflies (Ephemeroptera) Fauna Of Saskatchewan, Canada by J. M. Webb, et. al. The Ephemeroptera Of North Carolina by S. R. Beaty Pennsylvania Mayflies by Greg Hoover Insecta, Ephemeroptera: New Alabama state records by McCafferty & Webb Insecta, Ephemeroptera: Range extensions and new records for Ontario and Canada by McCafferty, Jacobus, Webb, Meyer Mayflies (Insect: Ephemeroptera) of Nevada, Unites States of America by W. P. McCafferty, R. P. Randolph A New Species of Mayfly from WV by B. C. Kondratieff and M. D. Meyer The Mayflies (Ephemeroptera) Of Alaska by R. P Randolph and W. P. McCafferty Mayflies (Ephemeroptera) of the far western United States: Part III: California by M. D. Meyer & W. P. McCafferty Insecta, Ephemeroptera: New and additional records for New York by Meyers, Jacobus, Kondratieff New Records Of Mayflies (Ephemeroptera From Alberta, Can. by J.P. Webb and W. P. McCafferty Insecta, Ephemeroptera: range extensions and new Iowa state records by McCafferty, Hubbard, and Webb Nunavut Mayflies (Ephemeroptera) A Supplement For Far Northern North America by R.P Randolph & W.P. McCafferty A New Species of Caenis (Ephemeroptera: Caenidae) from Florida, USA by M.L. Pescador & B. A. Richard Cercobrachys fox: Guenther & McCafferty, 2005; Sun & McCafferty, 2008; Guenther & McCafferty, 2008 Cladistics, classification, and identification of the brachycercine mayflies (Caenidae) by Lu Sun & W. P. McCafferty A new species and new synonym in Heptagenia ... by J.B. Webb, W.P. McCafferty, and V.R. Ferris A New Genus and Species of Small Minnow Mayfly from Far Northern North America by W.P. McCafferty A New Species of Maccaffertium Bednarik (Ephemeroptera: Heptageniidae) by W.P. McCafferty A New Species of (Baetidae); First Representative of Genus North of Mexico by W. P.McCafferty Contributions to the larvae of N. American Nixe (Ephemeroptera: Heptageniidae) ... by W.P. McCafferty & M.D. Meyer Insecta, Ephemeroptera: Transcontinental range extensions in western North America by F.M. Webb & W.P. McCafferty A New Species of Acentrella from New York and New England by S.K. Burian & L.W. Myers A New Species of Mayfly from West Virginia by B.C. Kondratieff & M.D. Meyer BoldSystems - Public Data Portal - Specimen Record - Nixe joernensis by L. Jacobus A New Genus And New Species of Baetidae from lakes and reservoirs in eastern North America by Hill, Pfeiffer, & Jacobus Contributions to the Systematics of Leucrocuta, Nixe, and Related Genera (Ephemeroptera: Heptageniidaeby W.P. McCafferty Phylogenetic Systematics of the Potamanthidae (Ephemeropters) by Y.J. Bae andnW.P. McCafferty A Revision of Subgenus Drunella by R.K. Allen and G.F. Edmunds, Jr. A DNA Barcode Library for North American Ephemeroptera: etc. by Webb, Jacobus, Funk, et. al. Mayflies (Ephemeroptera) of the Great Plains. I: Nebraska by McCafferty, Kluggertanz, Randolph, Provonsha, Lawson, Kondratieff Mayflies (Ephemeroptera) of the Great Plains. II: Iowa by McCafferty, Hubbard, Klubertanz, Randolph, Birmingham Mayflies (Ephemeroptera) of the Great Plains. III: North Dakota by J.L. Guenther and W.P. McCafferty Mayflies (Ephemeroptera) of the Great Plains. IV: South Dakota by J.L. Guenther and W.P. McCafferty South Carolina Mayflies (Ephemeroptera) by W.P. McCafferty and M.D. Meyer
Created: 01/04/2014 Last modified: 01/04/2014 www.FlyfishingEntomology.com