Vol. 1 1 5. No. 4. September & October 2004 213 ADDITIONS AND EMENDATIONS TO THE MAYFLY (EPHEMEROPTERA) FAUNA OF SASKATCHEWAN, CANADA 1 J. M. Webb, 2 D. W. Parker,' D. M. Lehmkuhl, 4 and McCafferty 5 ABSTRACT: Twenty-four species of Ephemeroptera are added to the known Ephemeroptera fauna of Saskatchewan based on the report of new data. Five species previously recorded from Saskatche-wan were based on misidentifications or unsubstantiated data. With the new additions and emenda-tions, 106 species of mayflies are known from Saskatchewan. Significant range extensions are report-ed for Pluiulitus gloveri, Procloeon viridoculare, and Serratella serrata. KEY WORDS: Ephemeroptera, Saskatchewan (Canada), new records, emendations McCafferty and Randolph (1998) accounted for 83 mayfly species from Sas-katchewan in their faunistic review of Canadian Ephemeroptera. Since then another three nominal species were reported by Sun et al. (2002), Randolph et al. (2002), and McCafferty et al. (2004), and two previously reported species have been removed from the list of species known from Saskatchewan as a result of synonymies (McCafferty 2001, Wang and McCafferty 2004). It should also be noted that Arthroplea bipunctata (McDunnough), Ecdyonurus simplicioides (McDunnough), and Asioplax edmundsi (Allen) [reported as Tricorythodes cor-pulentus Kilgore and Allen] had been correctly reported from Saskatchewan (Mason and Lehmkuhl 1983, Whiting and Sheard 1990) but were not listed by McCafferty and Randolph (1998). A further study of the Saskatchewan fauna, as reported here and based primarily on the study of old and new collections, has generated numerous new provincial records and allowed corrections to certain previous records. The Saskatchewan record of Procloeon rivulare (Traver) by Mason and Lehmkuhl (1983) cannot be confirmed and is highly unlikely, the rec-ords of Heptagenia solitaria McDunnough and Ephemerella aurivillii (Bengts-son) by Lehmkuhl (1976) are referable to H. pulla (Clemens) and E. needhami McDunnough respectively, and a record of Tortopus primus (McDunnough) by Lehmkuhl (1976) was only a probable record and has not yet been substantiated. Additionally, the material reported as Baetisca obesa (Say) by Lehmkuhl (1972) is referable to B. laurentina McDunnough. Therefore, H. solitaria. P. rivulare, E. aurivillii, T. primus, and B. obesa should be deleted from the Saskatchewan list of mayflies. The following species should be added to the Saskatchewan list of mayflies based on new data: Ameletus siibnotatus, Baetis bicaitdatus, B. 1 Submitted April 3, 2003. Accepted September 29, 2004. -' Department of Entomology, Purdue University, West Lafayette, IN 47907 U.S.A. E-mail: jmw975( yahoo.com. 1 Aquatax Consulting, Saskatoon, Saskatchewan, Canada. E-mail:
[email protected] 'Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5E2 Canada. E-mail: Ichmkuhlw duke.usaskca. 'Department of Entomology, Purdue University, West Lafayette, IN 47907 U.S.A. E-mail: pat_mccaffertyta entm.purdue.edu. Mailed on February 3, 2005
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