Northern Canadian mayflies (Insecta; Ephemeroptera), records and descriptions

• Published in: Canadian Journal of Zoology
• Main Authors: Harper, Françoise, Harper, P. P.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1981
• Subjects: Animal Science and Zoology; Ecology, Evolution, Behavior and Systematics; Canada; Tundra; James Bay
• Online Access: http://dx.doi.org/10.1139/z81-244; http://www.nrcresearchpress.com/doi/pdf/10.1139/z81-244

Sixty-eight species are recorded from the northern regions, tundra and open boreal forest, of Canada. The Eurasian Ephemerella mucronata (Bengtsson) is reported for the first time from North America and Caenis Candida n.sp. is described from the James Bay drainage in Quebec. The mayfly fauna of Northern Canada is composed of a distinctive tundra element (five species, three of which are holarctic), a north boreal element containing a few characteristic but not exclusive species, together with the most tolerant species of the eastern and, to a limited extent, western temperate faunas. Eighty-two species are now reported from Canada north of the closed boreal forest, roughly one fourth of the known Canadian fauna of mayflies.