Sweltsa townesi
Creators: name: Nye, Kelly C.
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Chloroperlidae
Sweltsa
Sweltsa townesi

description: <i>Sweltsa townesi</i> (Ricker) <i>Alloperla</i> (<i>Sweltsa</i>) <i>townesi</i> Ricker, 1952:184. Holotype &amp;male; (Illinois Natural History Survey), California, [Tuolumne Co.], Dardanelle <i>Sweltsa townesi</i>: Lee &amp; Baumann, 2010:35. Redescription with SEM <b>Material examined.</b> <b>CALIFORNIA</b>: <b>Alpine Co.:</b> West Carson River, 12 July 1995, R. Bottorff, 1&amp;male; (BPS). <b>El Dorado Co.:</b> Truckee River, Hwy 50, 13 July 1995, R. Bottorff, 2&amp;male; (BPS). <b>Nevada Co.:</b> Sagehen Creek, Sagehen Biological Station, 19 June 1985, B. Stark, 16&amp;male;, 9&amp;female; (BPS). <b>Placer Co.:</b> Truckee River, Hwy 89, Goose Meadow Campground, 22 June 2009, B. Stark, K. Nye, A. Harrison, 1&amp;male;, 1&amp;female; (BPS). <b>Plumas Co.:</b> Graeagle Creek, Graeagle, 5 July 1979, B. Stark, K.W. Stewart, 1&amp;male;, 3&amp;female; (BPS). <b>Sierra Co.:</b> Big Spring, Hwy 49, near Bassetts, 21 June 2009, B. Stark, K. Nye, A. Harrison, 1&amp;male;, 3&amp;female; (BPS). Dark Canyon Creek, Lemon Canyon Road, 21 June 2009, B. Stark, K. Nye, A. Harrison, 2&amp;male;, 3&amp;female; (BPS). Cold Creek, 1 mile south Cold Creek Campground, 5 July 1979, B. Stark, K.W. Stewart, 2&amp;male; (BPS). <b>NEVADA</b>: <b>Washoe Co.:</b> small stream from Marletta Lake, Hwy 28, 24 June 2009, B. Stark, C. R. Nelson, K. Nye, A. Harrison, 9&amp;male;, 7&amp;female; (BPS). Galena Creek, Galena Creek Park, 24 June 2009, B. Stark, C. R. Nelson, K. Nye, A. Harrison, 3&amp;male;, 16&amp;female; (BPS). <b>Male epiproct.</b> Total length ca. 500-530 µm, basal width ca. 125-150 µm, greatest width ca. 245-250 µm. Epiproct saggitate in dorsal aspect with thick tip slightly upturned and bearing narrow groove which extends from base to ca. 90-110 µm from apex (Figs. 19-22). Dorsal surface bearing short, multifilament setae (Fig. 23); ventral surface glabrous. <b>Dorsal process.</b> Located on tergum 9. Total width ca. 160-180 µm, median notch shallow with truncate floor, notch width ca. 80-90 µm. Lobes of process triangular in outline (Fig. 24). <b>Comments.</b> The epiproct and dorsal process were illustrated by Ricker (1952). Surdick (1995) presented dorsal, dorsolateral and fully lateral outlines of this structure. More recently Lee &amp; Baumann (2010) included five SEM images of the <i>S. townesi</i> epiproct in their redescription of that species. Surdick (1995) considered <i>S. townesi</i> and <i>S. resima</i> as sister species but data from the description and placement of <i>S. salix</i> in this group suggest <i>S. townesi</i> and <i>S. salix</i> are the more closely related pair (Lee &amp; Baumann 2010). Unfortunately, no support for either of these hypotheses is available from our limited study.
description: Published as part of <i>Nye, Kelly C. &amp; Stark, Bill P., 2010, A Scanning Electron Microscopy Study Of The Epiprocts Of Western North American Sweltsa (Plecoptera: Chloroperlidae), pp. 248-255 in Illiesia 6 (18)</i> on pages 252-255, DOI: 10.5281/zenodo.4760011
description: {"references": ["Ricker, W. E. 1952. Systematic studies in Plecoptera. Indiana University Publications, Science Series No. 18. Indiana University Press, Bloomington, Indiana. 200 pp.", "Lee, J. J. &amp; R. W. Baumann. 2010. Studies on Sweltsa townesi and a new species, Sweltsa salix, from northern California (Plecoptera: Chloroperlidae). Illiesia, 6: 34 - 40.", "Surdick, R. F. 1995. New western Nearctic Sweltsa (Plecoptera: Chloroperlidae). Proceedings of the Entomological Society of Washington, 97: 161 - 177."]}