Isoperla burksi Frison 1942
Creators: name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isoperla
Isoperla burksi

description: <i>Isoperla burksi</i> Frison, 1942 Banded Stripetail (Figs. 1‒6) http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:468714 <i>Isoperla burksi</i> Frison, 1942:332. Holotype &amp;male; (INHS), Lusk Creek, Eddyville, Pope Co., Illinois <i>Isoperla burksi</i>: Illies 1966:392, 397. <i>Isoperla burksi</i>: Poulton &amp; Stewart 1991:47. <i>Isoperla burksi</i>: Szczytko &amp; Kondratieff 2015:52. <b>Egg.</b> General shape oblong, cross-section concave (Figs. 1‒2), anterior and posterior poles broadly-rounded (Figs. 2‒4). Color pale brown. Collar well-developed, with irregular longitudinal ridges, slightly flared apically (Fig. 3). Follicle cell impressions near collar ranging from elongate to hexagonal (Figs. 1, 3). Chorion covered mostly with irregular-shaped pentagonal or hexagonal follicle cell impressions with thickened elevated ridges (Figs. 4‒6); floors with numerous shallow pits (Fig. 5‒6). Eclosion line present (Figs. 4‒6). Micropyles located along ridges near eclosion line in anterior ¼ (Figs. 5‒6). <b>Material examined</b>. <b>Alabama</b>, DeKalb Co., South Sauty Creek, 6 km N Rainsville, 34.5484, -85.8543, 7 May 2008, S.A. Grubbs, &amp;male;, &amp;female; (WKUC). <b>Indiana</b>, Jackson Co., Little Salt Creek, 7 km NNW Freetown, 39.0375, -86.1494, 25 May 2002, S.A. Grubbs, 2&amp;female; (WKUC). <b>Kentucky</b>, Edmonson Co., Bear Creek, 3 km NW Bee Spring, 37.3029, -86.3204, 6 May 2013, S.A. Grubbs, &amp;female; (WKUC); Green Co., Big Brush Creek, Bloyd, 37.4049, -85.5758, 27 April 2002, S.A. Grubbs, &amp;female; (WKUC). <b>Distribution. USA</b>: AL, AR, IL, IN, KY, MD, MO, NC, SC, NJ, OH, OK, SC, VA, WV (DeWalt et al. 2016). <b>Diagnosis.</b> Szczytko &amp; Kondratieff (2015) placed this species in the <i>I. burksi</i> group with <i>I. cotta</i> Ricker, 1952 and <i>I. orata</i> Frison, 1942. Egg characteristics uniting these species include a concave crosssection, well-developed collar, distinct ridges offsetting the cell impressions, and lack of an eclosion line (Szczytko &amp; Kondratieff 2015). Eggs of <i>I. burksi</i> from Indiana and Kentucky, however, possess a distinct eclosion line (Figs. 4‒6) that easily distinguishes this species from <i>I. cotta</i> (Szczytko &amp; Kondratieff 2015, figs. 10.14, 10.18) and <i>I. orata</i> (Szczytko &amp; Kondratieff 2015, figs. 37.9, 37.12). Each of the other three characteristics listed above are exhibited by <i>I. burksi</i>.
description: Published as part of <i>Grubbs, Scott A., 2016, Taxonomic Notes On The Eggs Of Eastern Nearctic Isoperla (Plecoptera: Perlodidae: Isoperlinae), pp. 35-41 in Illiesia 12 (8)</i> on page 37, DOI: 10.5281/zenodo.4757733
description: {"references": ["Frison, T. H. 1942. Studies of North American Plecoptera with special reference to the fauna of Illinois. Illinois Natural History Survey Bulletin, 22: 235 - 355.", "Illies, J. 1966. Katalog der rezenten Plecoptera. Das Tierreich 82. Walter de Gruyter and Company, Berlin. 632 pp.", "Poulton, B. P. &amp; K. W. Stewart. 1991. Stoneflies of the Ozark and Ouachita Mountains (Plecoptera). Memoirs of the American Entomological Society, 13: 1 - 116.", "Szczytko, S. W. &amp; B. C. Kondratieff. 2015. A review of the eastern Nearctic Isoperlinae (Plecoptera: Perlodidae) with description of twenty-two new species. Monographs of Illiesia, 1: 1 - 289.", "DeWalt R. E., M. D. Maehr, U. Neu-Becker, &amp; G. Stueber. 2016. Plecoptera species file online. Version 5.0 / 5.0. Available online: http: // Plecoptera. SpeciesFile. org [retrieved 15 June 2016]", "Ricker, W. E. 1952. Systematic studies in Plecoptera. Indiana University Publications Science Series, 18: 1 - 200."]}