A Mayfly - Callibaetis ferrugineus
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Larvae of C. ferrugineus can be distinguished from those of C. pallidus by the presence of a dark sub-apical band on the femora. (Check 1982) noted that the dark band is absent in some western populations of C. ferrugineus; the relatively short (5-7.5 x longer than wide) apical seta of the tarsi will differentiate these specimens from C. pallidus (Webb 2002).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Callibaetis is common in lakes, permanent ponds, and slow-flowing portions of streams throughout North America.
Adults were collected between May and September and it is likely that more
than one generation occurs per year.
- Literature Cited AboveLegend: View Online Publication
- Check, G.R. 1982. A revision of the North American species of Callibaetis (Ephemeroptera: Baetidae). Ph.D. thesis. University of Minnesota, St. Paul, MN.
- Webb, J.M. 2002. The Mayflies of Saskatchewan. M.Sc. thesis, University of Saskatchewan, Saskatoon.
- Additional Sources of Information Related to "Insects"