Ephemeroptera: Heptageniidae of Gunnison County, Colorado
Epeorus deceptivus (McDunnough) 1924
Flat headed mayfly
Updated 20 Oct 2020
On this website:
Introduction to Epeorus
Photos, Map, Museum specimens, DNA - Barcodinglife.org
Allan,JD and Feifarek,BP 1988 Prey preference in stoneflies: a comparative analysis of prey vulnerability. Oecologia, 76(4), pp.496-503.
Alvarez,M and Peckarsky,BL 2013 The influence of moss on grazers in high-altitude streams: food, refuge or both? Freshwater Biology, 58(9) 1982-1994. PDF
Edmunds,GF; Allen,RK 1964 The Rocky Mountain species of Epeorus (Iron) Eaton (Ephemeroptera: Heptageniidae). Journal of the Kansas Entomological Society 37 (4) 275-288. Abstract PDF
Lehmkuhl,DM 1968 Observations on the life histories of four species of Epeorus in western Oregon (Ephemeroptera: Heptageniidae). Pan-Pacific Entomologist 44(2):129-137. PDF
McCafferty,WP; Durfee,RS; Kondratieff,BC 1993 Colorado mayflies (Ephemeroptera): an annotated inventory. Southwestern Naturalist 38 3, 252-274. PDF
Discussed as Iron deceptivus. There are museum specimens mentioned from the Crystal River, East River and Gunnison River. Quote from page 260: "This species is evidently restricted to the intermountain West (Edmunds and Allen, 1964) "
McCafferty,WP and Provonsha, AV The Mayflies of North AmericaSpecies List (Version 8Feb2011)
Here is the geographic range and synonyms:
Epeorus deceptivus (McDunnough), 1924 [CAN:FN,NW;USA:FN,NW,SW]
* Cinygma deceptiva McDunnough, 1924 (orig.)
* Iron deceptivus (McDunnough), 1924 (comb.)
McDunnough,J 1924 New Canadian Ephemeridae with notes, II. Canadian Entomologist 56, 90-98, 113-122, 128-133.
McIntosh,AR; Peckarsky,BL and Taylor,BW 2002 The influence of predatory fish on mayfly drift: extrapolating from experiments to nature. Freshwater Biology 47, 1497-1513. PDF
Peckarsky,BL 1990 Habitat selection by stream-dwelling predatory stoneflies. Canadian Journal of Fisheries and Aquatic Sciences 48, 1069-1076.
Peckarsky,BL 1991a A field test of resource depression by predatory stonefly larvae. Oikos 61 (1) 3-10.
Peckarsky,BL 1991b Is there a coevolutionary arms race between predators and prey? A case study with stoneflies and mayflies. Advances in Ecology 1, 167-180.
Peckarsky,BL 1996 Alternative predator avoidance syndromes of stream-dwelling mayfly larvae. Ecology 77(6) 1888-1905.Abstract
Peckarsky,BL; Cowan,CA 1995 Microhabitat and activity periodicity of predatory stoneflies and their mayfly prey in a western Colorado stream. Oikos 74 3, 513-521.
Peckarsky,BL and Penton,MA 1989 Mechanisms of prey selection by stream-dwelling stonefly nymphs. Ecology 70(5) 1203-1218. Abstract
Radford,DS and Hartland-Rowe,R 1971 The life cycles of some stream insects (Ephemeroptera, Plecoptera) in Alberta. The Canadian Entomologist, 103(4) 609-617.
Names have changed since 1971:
Abstract: " The life histories of Nemoura besametsa, Epeorus deceptivus, Epeorus longimanus, and Ephemerella coloradensis are described as "fast seasonal" types and Arcynopteryx aurea, Nemoura cinctipes, Nemoura columbiana, Nemoura oregonensis, Cinygmula ramaleyi, Ephemerella doddsi, and Rhithrogena doddsi as "slow seasonal" types according to Hynes´ (1961) classification. All of the species are univoltine with the exception of N. cinctipes which may be bivoltine. There seems to be a correlation between life cycles and food availability. A means of ecological separation in the four Nemoura species is elucidated. Stream temperature was found to influence growth rates."
Brown,WS 2004 Mayflies (Ephemeroptera) of Gunnison County, Colorado, USA
"We never tire of each other, the mountain and I." --Lao Tzu