Plecoptera: Chloroperlidae of Gunnison County, ColoradoIntroduction to Sweltsa Ricker 1943Green stonefliesUpdated 19 Mar 2007
Provisional Species ListSweltsa borealisSweltsa coloradensis Sweltsa fidelis Sweltsa lamba LinksOn this website:Key to Chloroperlidae Nymphs Key to Chloroperlidae Males Key to Chloroperlidae Females Other Websites: PAN Pesticides database: http://www.pesticideinfo.org/PCW/List_AquireAll.jsp?Species=6101 ReferencesBaumann,RW; Gaufin,AR; Surdick,RF 1977 The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208.Quote from page 174: "The species comprising the genus Sweltsa are similar in appearance and the females are extremely difficult to separate. Reticulate dark markings on either head or pronotum characterize several species (figs. 547[Sweltsa gaufini], 553[Sweltsa coloradensis], 554). Others are almost completely yellow except for a dark pronotal margin and abdominal stripe. In most species, there is a transverse elevated process near the front margin of the ninth tergum of the male (fig. 516)." Clements,WH; Carlisle,DN; Lazorchak,JM; Johnson,PC 2000 Heavy metals structure benthic communities in Colorado mountain streams. Ecological Applications 10(2)626-638. Abstract Quote from page 632: "In particular, abundance of the mayflies Rhithrogena robusta (Fig. 5b), Cinygmula sp.(Fig. 5c), and Drunella doddsi(Fig. 5d), and the stonefly Sweltsa sp.(Fig. 5e) was significantly lower at medium- and high-metal stations." Pennack,RW; Ward,JV 1986 Interstital faunal communities of the hyporheic and adjacent groundwater biotopes of a Colorado mountain stream. Archiv für Hydrobiologie Suppl. 74 3, 356-396. They found Sweltsa sp. nymphs in the hyporheic zone of the South Platte river in the Front Range of Colorado at 1863 meters elevation. Ricker, W.E. 1943. Stoneflies of Southwestern British Columbia. Indiana University Publications, Science Series 12 145 pages, Bloomington, Indiana. First description of this genus. Stewart,KW; Ricker,WE 1997 The stoneflies of the Yukon. pgs 201–222 in Danks,HV and Downes,JA (Eds.), Insects of the Yukon. Biological Survey of Canada (Terrestrial Arthropods), Ottawa. 1034 pp. Quote from page 214: "Nearctic and eastern Paearctic; 27 Nearctic species of which 20 are western, distributed generally from Alaska and Yukon to California and New Mexico. Adults are tan to yellow, 8-18 mm. They are late spring to autumn emergers, depending on species, elevation and latitude. Some species like S. borealis and S. coloradensis are found in streams of all sizes. No definitive life-history studies of western species have been reported. The eastern S. mediana (Banks) and S. onkos (Rickers) have 2-year, semivoltine cycles (Harper, 1973). " Stark,BP; Stewart,KW 2005 Nymphs of four western nearctic Sweltsa species (Plecoptera: Chloroperlidae). Transactions of American Entomological Society 131 1+2, 189-200. Surdick,RF 1985 Nearctic Genera of Chloroperlinae (Plecoptera: Chloroperlidae). University of Illinois Press, Urbana, IL. 146 pages. Surdick,RF 1995a New western nearctic Sweltsa (Plecoptera: Chloroperlidae). Proceedings of the Entomological Society of Washington 97 1, 161-177. The United States Geological Survey (USGS) National Water Quality Assessment Data Warehouse (NAWQA) shows this genus present in Gunnison County. Data as of 1Sep2005 |