Sweltsa coloradensis (Banks)

Stark, Bill P. & Baumann, Richard W., 2018, Two New Stonefly Species In The Sweltsa Coloradensis (Banks) Complex (Plecoptera: Chloroperlidae), Illiesia 14 (2), pp. 30-43 : 34-36

publication ID

https://doi.org/ 10.5281/zenodo.4761184

publication LSID

lsid:zoobank.org:pub:B8CCB061-1D40-4D5B-9394-91193C44132

DOI

https://doi.org/10.5281/zenodo.4760768

persistent identifier

https://treatment.plazi.org/id/1B0987B1-FF89-024D-FE84-FA60D0DCFEC7

treatment provided by

Felipe

scientific name

Sweltsa coloradensis (Banks)
status

 

Sweltsa coloradensis (Banks) View in CoL

( Figs. 1-15 View Fig View Figs View Figs View Figs , 36-37 View Figs , 42, 45 View Figs )

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:3555

Chloroperla coloradensis Banks, 1898 View in CoL -1899:199.

Holotype ♀ (Museum of Comparative Zoology), Colorado

Alloperla coloradensis: Needham & Claassen, 1925:113 View in CoL (In part)

Alloperla (Sweltsa) coloradensis: Ricker, 1943:135 View in CoL Sweltsa coloradensis: Illies, 1966: 451 View in CoL

Material examined. UNITED STATES: California:

Modoc Co., Rush Creek, Hwy 299, Upper Rush Creek Campground, 24 May 2007, R.W. Baumann, B.C. Kondratieff, 1♂ ( BYU). Colorado: Eagle Co., Deep Creek, 17 Rd, 27 June 1997, B.C. Kondratieff, 11♂, 1♀ ( CSUIC). Gilpin Co., South Boulder Creek, 2 miles W Tolland, 7 July 1991, B.C. Kondratieff, R. Durfee, 16♂, 10♀ ( CSUIC). Grand Co., Colorado River, Kawuneeche Valley, Rocky Mountain National Park, 18 June 1980, B.C. Kondratieff, 3♂, 6♀ ( CSUIC). Gunnison Co., Quartz Creek, 76 Rd, N of Pitkin, 7 July 2008, K.W. Stewart, 25♂, 38♀ ( BPSC). Idaho: Bannock Co., Mill Creek, Summit Campground, 5 June 2010, B. Stark, R.W. Baumann, 2♂ ( BPSC). Nevada: Elko Co., Lamoille Creek, Thomas Canyon Campground, 40° 39’ N, - 115° 24.4’ W. 23 June 2006, S.M. Clark, 7♂, 10♀ ( BYU). Humboldt Co., Indian Creek, Santa Rosa Range, 29 June 1999, A.L. Sheldon, 10♂, 19♀ ( BYU). Mahogany Creek, Summit Lake Mountain, 1 July 1999, A.L. Sheldon, 16♂, 14♀ ( BYU). Nye Co., South Fork Pine Creek, Toquima Range, 7 July 1999, A.L. Sheldon, 14♂, 5♀ ( BYU). Washoe Co., Rock Creek, Granite Range, 5 June 1998, A.L. Sheldon, 1♂ ( BYU). White Pine Co., Berry Creek, Schell Creek Range, Berry Creek Campground, 24 June 2006, R.W. Baumann, B.C. Kondratieff, 15♂, 9♀ ( BYU). Timber Creek, Timber Creek Campground, Schell Creek Range, 39° 24’ N, - 114° 38’ W, R.W. Baumann, B.C. Kondratieff, 35♂, 14♀ ( BYU). New Mexico: Rio Arriba Co., Rio de las Vallecitos, 4 miles N Cañón Plaza, 11 June 1985, R.L. Hassage, 1♂ ( BYU). San Miguel Co., Terrero, Pecos River, 10 June 1974, B. Stark, T. Wolfe, 3♂, 6♀ ( BPSC). Oregon: Harney Co., McCoy Creek, 1 mile above Fish Lake, Steens Mountains, 20 July 1969, S.G. Jewett, Jr. 3♂, 10♀ ( BYU). Umatilla Co., Camas Creek, Hwy 395, Ukiah Dale State Park, 16 May 2001, B. Stark, K.W. Stewart, J.B. Sandberg, 3♂, 2♀ ( BPSC). North Fork John Day River, Hwy 395, 12 miles S Ukiah, 16 May 2001, B. Stark, K.W. Stewart, J.B. Sandberg, 5♂, 1♀ ( BPSC). Union Co., Grande Ronde River, Bird Track Springs Campground, Hwy 244, 45° 18.027’ N, - 118° 18.427’ W, 15 May 2014, B. Stark, A. Harrison, 1♂ ( BPSC). South Dakota: Lawrence Co., Spearfish Creek, Hwy 85, Cheyenne Crossing, 7 June 1995, R.W. Baumann, B. Huntsman, 10♂, 14♀ ( BYU). Utah: Box Elder Co., Clear Creek, Raft River Mountains , 18 June 1979, R.W. Baumann, G.M. Webb, 23♂, 20♀ ( BYU). Juab Co., Granite Creek, Deep Creek Mountains, 14 April 1984, R.W. Baumann, 18♂, 5♀ ( BYU). Salt Lake Co., Big Cottonwood Creek, 22 June 1974, B. Stark, 10♂, 5♀ ( BPSC). Sanpete Co., Willow Creek, Ephraim Canyon, 39.29707 N, - 111.52377 W, 28 June 2005, Johnson, Anderson, 14♂, 16♀ ( BYU). Tooele Co., Harker Creek, Harker Canyon, Sheep Rock Mountains, 39° 59’ N, - 112° 39’ W, 30 May 2012, R.W. Baumann, G.M. Webb, 8♂, 5♀ ( BYU). South Willow Creek, Boy Scout Campground, Stansbury Mountains, 11 June 2007, R.W. Baumann, K. Anderson, 20♂, 21♀ ( BYU). Wasatch Co., Cascade Springs, Uintah National Forest, 27 May 2000, B. Stark, 8♂, 4♀ ( BPSC). Daniels Canyon, Whiskey Springs Picnic Area, 40° 24.677’ N, - 111° 19.278’ W, 13 June 2015, B. Stark. 7♂, 12♀ ( BPSC). Wyoming: Big Horn Co., West Tensleep Creek, N of West Tensleep Lake, 19 July 2005, D.E. Martin, 2♂ ( BYU). Fremont Co., Jakeys Creek, Hwy 26, 5 miles E of Dubois, 20 July 1967, R.W. Baumann, 2♂, 2♀ ( BYU). Washakie Co., 12.5 km ESE Tensleep, 25 June 1996, K.B. Miller, 9♂, 10♀ ( CSUIC).

Adult habitus. Described by Needham & Claassen (1925). Male forewing length 7.0- 7.5 mm, female 8.5-9.0 mm. Head and pronotum pale yellow with dark markings; ocelli connected by a V-shaped dark brown mark, M-line and anteromedian area of head forward of M-line dark brown. Pronotum pale yellow with almost complete dark brown margins and rugosities ( Fig. 42 View Figs ). Abdomen brown with subtle, slightly darker median brown stripe. Cerci pale, antennae pale basally but brown in apical two thirds. Wing membrane pale, veins pale brown.

Male epiproct (n=12). Maximum width 320-370 μm, length 360-450 μm. Base relatively narrow, but gradually expanded beyond cowl, and reaching maximum width across lateral projections of epiproct body. Shoulders project conspicuously beyond hook base ( Figs. 1-13 View Fig View Figs View Figs , 45 View Figs ).

Aedeagus (n=3). Length 500-524 μm, width 590-760 μm. Entirely membranous; apex with a pair of small finger-shaped lobes in a parallel or V-pattern, apicolateral margins, each bearing a large, projecting, rounded lobe, and mesoventral area with a pair of eye-like lobes ( Figs. 14-15 View Figs ); Fingershaped lobes bear scattered setae of variable length, apicolateral lobes bare; mesoventral lobes bare, but each with a transverse groove. Median ventral field below mesoventral eye-shaped lobes with a low nose-like tubercle.

Female subgenital plate. Posterior margin of plate projecting over basal third to half of sternum 9; plate truncate, to slightly concave along posterior margin. Plate usually darkly pigmented over most of surface, contrasting with the pale sternum 9 and the pale basal and lateral areas of sternum 8 ( Figs. 36-37 View Figs ).

Diagnosis and distribution. This species, in which the epiproct shoulders conspicuously project beyond the base of the epiproct hook ( Fig. 45 View Figs ), is the common form in the central Rockies and Great Basin, and the probable “true” S. coloradensis . Published records exist for S. coloradensis from Alberta, British Columbia and Yukon Territory in Canada, and from Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, South Dakota, Utah, Washington and Wyoming in the United States (DeWalt et al. 2017; Surdick 1985). Many of the published records will apply to one of the two newly described species below. The Montana, Washington, Alberta, British Columbia and Yukon specimens examined by us have all been determined as S. lyrata sp.n., and the Arizona and western New Mexico specimens are determined as S. mogollonica sp. n. Specimens from the Central Rocky Mountains of Colorado and Utah are identified as S. coloradensis, Some states (e.g. Idaho and New Mexico) have populations of at least two members of the complex. We have recognized populations of S. coloradensis from the sites listed in the “Material examined” section above.

R

Departamento de Geologia, Universidad de Chile

BYU

Monte L. Bean Life Science Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Chloroperlidae

Genus

Sweltsa

Loc

Sweltsa coloradensis (Banks)

Stark, Bill P. & Baumann, Richard W. 2018
2018
Loc

Alloperla (Sweltsa) coloradensis:

Illies, J. 1966: 451
Ricker, W. E. 1943: 135
1943
Loc

Alloperla coloradensis: Needham & Claassen, 1925:113

Needham, J. G. & P. W. Claassen 1925: 113
1925
Loc

Chloroperla coloradensis Banks, 1898

Chloroperla coloradensis Banks, 1898 -1899:199.
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