Sweltsa mediana (Banks)

Stark, Bill P., Kondratieff, Boris C., Kirchner, Ralph F. & Stewart, Kenneth W., 2011, Larvae Of Eight Eastern North American Sweltsa (Plecoptera: Chloroperlidae), Illiesia 7 (4), pp. 51-64: 56

publication ID

http://doi.org/10.5281/zenodo.4760403

DOI

http://doi.org/10.5281/zenodo.4760003

persistent identifier

http://treatment.plazi.org/id/AF5E87AC-2C34-FFB5-FEAE-FF72FB193581

treatment provided by

Felipe

scientific name

Sweltsa mediana (Banks)
status

 

Sweltsa mediana (Banks)  

( Figs. 11-15 View Figs )

Alloperla mediana Banks, 1911:336   .

Holotype ♀ (Museum of Comparative Zoology), North Carolina, Black Mountain, North Fork of Swannanoa River  

Material examined. NORTH CAROLINA: Haywood Co.: Great Smoky Mountains National Park, Cataloochee River , 4 May 1985, K.W. Stewart, B.C. Kondratieff, R   . F. Kirchner , 7♂, 4♀, 7 larvae ( KWS)   . TENNESSEE: Sevier Co.: Great Smoky Mountains National Park , 2 mi below Newfound Gap Summit, 18 May 1993, B. Stark, B.C. Kondratieff, R   . F. Kirchner, 1 pharate larva. Great Smoky Mountains National Park, Greenbriar Cove , 3 mi above Ranger Station, 17 May 1983, B. Stark, B.C. Kondratieff, R   . F. Kirchner , 3♂, 3♀, 1 larva ( BPS)   .

Mature larva. Body length 7.0-8.0 mm. General color pale brown without distinctive pigment pattern except underlying adult pattern in pharate individuals. Pronotum bearing ca. 14 anterolateral setae and ca. 16 posterolateral setae near margin; posterolateral setal row extends to median suture ( Fig. 11 View Figs ).Mesonotum bearing prominent setae scattered along outer margin from base to apex ( Fig. 12 View Figs ), and a few inner marginal setae near notch. Metanotum with several outer marginal setae and a large grouping of intercalary setae on wingpad surface; apex of wingpads with interspersed long and short setae. Fore femora with a few fringe setae, tibiae sparsely fringed on outer surface ( Fig. 13 View Figs ). Thick setae present on dorsal and ventral margins and a few scattered on femoral surface; tibiae bearing long thin setae and a row of short thick setae along outer margin. Posterior abdominal fringe on tergum 8 with a mixture of thin and thick setae between innermost long setae ( Fig. 14 View Figs ); intercalary setae clustered in lateral group of ca. 7. Cerci with ca.15 segments; long dorsal setae in segmental whorls about as long as 1.5 segments ( Fig. 15 View Figs ).

Comments. This southern Appalachian species is found in the upper Tennessee River drainage southward in the mountainous regions of North Carolina, South Carolina, Tennessee and Virginia ( Surdick 2004) and earlier records from Alabama were recently assigned to S. hoffmani   by Grubbs (2010). Generally S. mediana   occurs in larger streams than S. lateralis   , but they are known to be sympatric at numerous sites. Mature larvae of S. mediana   are the only southern Appalachian Sweltsa species   with a long tibial fine setal fringe ( Fig. 14 View Figs ). See additional comments above for S. hoffmani   .

R

Departamento de Geologia, Universidad de Chile

BPS

California Department of Food and Agriculture

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Chloroperlidae

Genus

Sweltsa

Loc

Sweltsa mediana (Banks)

Stark, Bill P., Kondratieff, Boris C., Kirchner, Ralph F. & Stewart, Kenneth W. 2011
2011
Loc

Alloperla mediana

Banks, N. 1911: 336
1911