Isoperla powhatan Szczytko and Kondratieff 2015
Creators: name: Beaty, Steven R.
name: Holland, Victor B.
name: Lenat, David R.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isoperla
Isoperla powhatan

description: <i>Isoperla powhatan</i> Szczytko and Kondratieff, 2015 http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:468708 Material. USA <i>–</i> North Carolina, Montgomery <b>Co.,</b> <i>Barnes Creek</i>, Ophir Rd, 35.43861, -79.99888, 7/ V /2014, D. R. Lenat, 4 larvae, 3&amp;male; (reared) and exuvia; 2/ V /2015, S. R. Beaty, D. R. Lenat, 3&amp;male; (reared) and exuvia. <b>Remarks.</b> Males of <i>I. powhatan,</i> recently described by Szczytko &amp; Kondratieff, (2015a), were successfully reared from larvae collected from Barnes Creek, a 4 th order tributary of the Uwharrie River. Previous to this reporting, <i>I. powhatan</i> was recorded only from Pennsylvania and Virginia. Szczytko &amp; Kondratieff (2015a) considered the distribution of this species to be wider than they initially reported but material from adjacent states was unavailable for study. This first North Carolina record of <i>I. powhatan</i> resulted from attempts to rear and associate the larvae of <i>I. zuelligi</i> Szczytko &amp; Kondratieff, 2015, another recently described North Carolina species. Whereas <i>I. zuelligi</i> was not reared from collected larvae, adult <i>I. zuelligi</i> males and females with eggs were collected concurrently from nearby low riparian vegetation. <i>Isoperla powhatan</i> males exhibit a unique and somewhat box-shaped aedeagus with a long, wide median band of sharp, stout golden-brown spinulae located between a pair of posteromesal lobes (see 42.7 and 42.8 in Szczytko and Kondratieff 2015a). In conjunction with the broadly rounded paraprocts and the unique head pattern, the identity of this species is unmistakable. Associated larvae and exuvia from reared specimens closely resemble a dark-form habitus of <i>I. holochlora</i> larvae. However, stable morphological characters for separating larvae of <i>I. powhatan</i> and <i>I. holochlora</i> remain elusive. Barnes Creek is the type locality for <i>I. zuelligi</i>. The stream lies in the Carolina Slate Belt Level IV ecoregion in the midst of the Uwharrie Mountains, a relict mountain chain located in the North Carolina piedmont. Much of the Uwharries are managed as National Forest and thus the greatest impacts to local waterbodies are from timber harvest. Similar to most slate belt streams, Barnes Creek experiences reduced summer flows and a heavy silt load.
description: Published as part of <i>Beaty, Steven R., Holland, Victor B. &amp; Lenat, David R., 2017, Isoperla Arcana And Isoperla Borisi (Plecoptera: Perlodidae), Two New Stonefly Species From North Carolina, U. S. A. With Notes On The Distribution Of Isoperla Powhatan, pp. 140-166 in Illiesia 13 (14)</i> on page 164, DOI: 10.5281/zenodo.4752853
description: {"references": ["Szczytko, S. W. &amp; B. C. Kondratieff. 2015 a. A review of the Eastern Nearctic Isoperlinae (Plecoptera: Perlodidae) with the description of twenty-two new species. Monographs of Illiesia, No. 1: 1 - 289."]}