Stoneflies - Plecoptera: Chloroperlidae of Gunnison County, Colorado
Sweltsa coloradensis - Colorado Sallfly(Banks 1898)
Updated 18 Nov 2018
NotesOlder publications may refer to this species as Chloroperla coloradensis.
Good LinksOn this website:
Introduction to Sweltsa
Species details from plecoptera.species.file
Photos, Map, Museum, DNA - Barcodinglife.org
Nymph slide 35
Another Nymph slide 36>
Adult Slide 5
ReferencesBanks,N 1898 Descriptions of new North American neuropteroid insects. Transactions of the American Entomological Society 25:199-218.
Original description of S. coloradensis as Chloroperla coloradensis.
Baumann,RW, Gaufin,AR and Surdick,RF 1977 The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208.
Quote from page 178: "This species is common in creeks and small rivers throughout its range. The adults emerge from April through August. "
DeWalt,RE; Stewart,KW; Moulton,SR; Kennedy,JH 1994 Summer emergence of mayflies, stoneflies, and caddisflies from a Colorado mountain stream. Southwestern Naturalist 39 (3) 249-256. First page
Kiffney,PM; Clements,WH 1994 Effects of heavy metals on a macroinvertebrate assemblage from a Rocky Mountain stream in experimental microcosms. Journal of the North American Benthological Society 13 (4) 511-523.
Kondratieff,BC and Baumann,RW 2002 A review of the stoneflies of Colorado with description of a new species of Capnia (Plecoptera: Capniidae). Transactions of American Entomological Society 128 3, 385-401.
Quote from page 394. "This common and widespread Western North American species can be abundant in many Montane and Plateau streams, including larger streams between 1,600m and 2,500m."
Nelson,SM and Roline,RA 1999 Relationships between metals and hyporheic invertebrate community structure in a river recovering from metals contamination. Hydrobiologia 397, 211-226.
They found Sweltsa pr. coloradensis primarily in the hyporheic samples. The mean density in the surface samples was 2000 animals/meter² while in the hyporheic zone there was a mean of 13,744 animals/meter².
Newell,RL; Baumann,RW and Stanford,JA 2008 Stoneflies of Glacier National Park and Flathead River basin, Montana. International Advances in the ecology, zoogeography, and systematics of mayflies and stoneflies. University of California Publications in Entomology, Berkeley and Los Angeles, pp.173-186.
The authors note that S. coloradensis was the 2nd most frequently recorded species out of the 100 different stonefly taxa they collected in their survey of Glacier National park and the Flathead basin in northwestern Montana.
Stark,BP and Baumann,RW 2018 Two New Stonefly Species in the Sweltsa coloradensis (Banks) Complex (Plecoptera: Chloroperlidae). Illiesia, 14(02):30-43. https://doi.org/10.25031/2018/14.02 PDF
Abstract: "Male reproductive structures were examined with scanning electron microscopy for populations of the Sweltsa coloradensis (Banks) complex from throughout the known range in western North America. Sufficient variation was observed in epiproct structure to recognize and describe two new species. Sweltsa mogollonica, n. sp. is recognized from eastern Arizona and western New Mexico and S. lyrata, n. sp. is recognized from Alberta, British Columbia, Idaho, Montana, Washington and Yukon Territory."
[Among many electron microscope images is one of a specimen from Quartz creek in Gunnison County, CO]
Stewart,KW and Stark,BP 2002 Nymphs of North American Stonefly Genera. 2nd edition The Caddis Press, Columbus, Ohio. 510 pages.
Photo of nymph with clearly visible abdominal stripe on page 105 figure 6.8
Surdick,RF 1985 Nearctic Genera of Chloroperlinae (Plecoptera: Chloroperlidae). University of Illinois Press, Urbana, IL. 146 pages.
Surdick,RF 1995 New western nearctic Sweltsa (Plecoptera: Chloroperlidae). Proceedings of the Entomological Society of Washington 97 1, 161-177.
Brown, WS 2004 Plecoptera or Stoneflies of Gunnison County, Colorado