Ephemeroptera: Heptageniidae of Gunnison County, ColoradoHeptagenia elegantula
Dark Quill Gordon, Western yellow drake, Grey drake (Eaton) 1885
Updated 11 Jan 2010
TSN 100604
Links
On this website:
Heptagenia solitaria
Other Websites:
Map - Kondratieff, Boris C. (coordinator). 2000. Mayflies of the United States. Jamestown, ND: Northern Prairie Wildlife Research Center Online. (Version 12DEC2003). http://www.npwrc.usgs.gov/resource/distr/insects/mfly/usa/278.htm
References
Bedarik,AF; Edmunds,GF 1980 Descriptions of larval Heptagenia from the Rocky Mountain region (Ephemeroptera: Heptageniidae). Pan-Pacific Entomologist 56, 51-62.
Eaton AE. 1883-1888. A revisional monograph of recent Ephemeridae or mayflies. Transactions of the Linnean Society of London, Second Series, Zoology 3:1-352, 65 pl.
Described as Rhithrogena elegantula.
Edmunds Jr, GF. 1995 Habitat differences between northern and southern populations of mayflies of the western United States. Pages 171-176 in Corkum LD; Ciborowski JJH. Current Directions in Research on Ephemeroptera. Canadian Scholars' Press, Inc. Toronto.
Haden,GA; Blinn,DW; Shannon,JP; Wilson,JP 1999 Driftwood: an alternative habitat for macroinvertebrates in a large desert river. Hydrobiologia 397, 179-186.
McCafferty,WP; Durfee,RS; Kondratieff,BC 1993 Colorado mayflies (Ephemeroptera): an annotated inventory. Southwestern Naturalist 38 3, 252-274.
Quote from page "Larvae of H. elegantula can be dificult to distinguish from H. solitaria. See Bednarik and Edmunds (1980) for dorsal abdominal pattern variations in both species. Larvae tentatively identified as H. elegantula in CSU are from Grizzly Creek (Jackson Co.)"
They report specimens in the Purdue University Entomological Collection (PERC) from Iola in Gunnison County. Unfortunately now the ex-Gunnison River at the ex-town of Iola is usually under the water of Blue Mesa Reservoir.
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