Isoperla riverae, a new stonefly species from the southeast Nearctic, with notes on sympatric species including the larval description of Isoperla lenati Szczytko & Kondratieff, 2015 (Plecoptera: Perlodidae) Author Verdone, Chris J. 0000-0001-8482-0708 chris. verdone @ ncdenr. gov; https: // orcid. org / 0000 - 0001 - 8482 - 0708 chris.verdone@ncdenr.gov Author Beaty, Steven R. 0000-0003-2132-1754 steven. beaty @ ncdenr. gov; https: // orcid. org / 0000 - 0003 - 2132 - 1754 steven.beaty@ncdenr.gov Author Holland, Victor B. 0000-0002-2289-4143 victor. holland @ ncdenr. gov; https: // orcid. org / 0000 - 0002 - 2289 - 4143 victor.holland@ncdenr.gov Author Williams, Bronwyn W. 0000-0001-6403-112X North Carolina Museum of Natural Sciences, Research Laboratory, Raleigh, North Carolina, 27607, U. S. A. bronwyn. williams @ naturalsciences. org; https: // orcid. org / 0000 - 0001 - 6403 - 112 X bronwyn.williams@naturalsciences.org text Zootaxa 2023 2023-04-21 5270 3 437 470 http://dx.doi.org/10.11646/zootaxa.5270.3.3 journal article 10.11646/zootaxa.5270.3.3 eaa7d839-74bc-4840-a71a-b0f419c8b1e1 1175-5326 7860146 A6014F61-CC25-47A0-AEBC-88A0E841722A Isoperla lenati Szczytko & Kondratieff, 2015 ( Figs. 1–9 ) Little Stripetail http//lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:468919 Isoperla lenati Szczytko & Kondratieff 2015:137 . Holotype male (USNM), Naked Creek , Richmond Co. , North Carolina , U.S.A. Distribution. U.S.A. —FL, GA, NC, SC. ( DeWalt et al . 2023 ; Fig. 15 ) Material examined. U.S.A. — North Carolina : Hoke Co. , Flat Creek , Manchester Rd. , 35.18244 , -79.17695 , 13 March 2019 , emerged 21 March 2019 , C. Verdone , S. Beaty , L. Housley , 2F, 2E ( NCDWR ) ; same location, 13 March 2019 , emerged 25 March 2019 , C. Verdone , S. Beaty , L. Housley , 1F, 1E ( NCDWR ) ; same location, 13 March 2019 , emerged 26 March 2019 , C. Verdone , S. Beaty , L. Housley , 1M ( NCDWR ) ; same location, 13 March 2019 , emerged 29 March 2019 , C. Verdone , S. Beaty , L. Housley , 1M, 2F, 3E ( NCDWR ) ; same location, 13 March 2019 , emerged 11 April 2019 , C. Verdone , S. Beaty , L. Housley , 2F, 2E ( NCDWR ) ; same location, 13 March 2019 , C. Verdone , S. Beaty , L. Housley , 1M, 2F, 2E ( NCDWR ) ; same data, 1F, 1E ( NCDWR ) ; same data, C. Verdone , S. Beaty , L. Housley , 10L ( NCDWR ) ; Rockfish Creek , Plank Rd. , 35.05861 , -79.27907 , 23 April 1990 , NCDWR , 1L ( NCDWR ) . Hoke / Scotland Co. , Drowning Creek , Turnpike Rd. , 34.97414 , -79.37785 , 19 May 2018 , C. Verdone , 2F ( NCDWR ) ; Lumber River , NC 401 , 34.90081 , -79.34833 , 28 March 2006 , D. Lenat , 3L ( NCDWR ) ; same location, 25 March 2011 , D. Lenat , 2L ( NCDWR ) ; same data, 2L ( NCDWR ) ; same location, 20 May 2018 , C. Verdone , 1M ( NCDWR ) ; same location, 17 April 2019 , C. Verdone , V . Holland , 2M, 5F ( NCDWR ) ; same data, 1M, 1F ( NCDWR ) ; same location, 9 May 2020 , C. Verdone , V . Holland , 6M, 4F ( NCDWR ) . Moore Co. , Little River , Morrison Bridge Rd. , 35.19233 , -79.18408 , 17 April 2019 , C. Verdone , V . Holland , 4M, 7F ( NCDWR ) ; same data, 1L ( NCDWR ) ; unnamed tributary to Drowning Creek , SR 1140, 35.23711 , -79.66511 , 4 May 2006 , E. Fleek , S. Beaty , 3L ( NCDWR ) . Moore / Richmond Co. , Drowning Creek , SR 1102, 35.08426 , -79.58270 , 28 March 2019 , S. Beaty , C. Verdone , V . Holland , L. Housley , 1M, 1E ( NCDWR ) ; same data, 1M, 1E ( NCDWR ) ; same data, 2M ( NCDWR ) ; same location, 28 March 2019 , emerged 14 April 2019 , S. Beaty , C. Verdone , V . Holland , L. Housley , 1M, 1E ( NCDWR ) ; same location, 14 April 2019 , C. Verdone , D. Fuller , S. Beaty , 2F ( NCDWR ) ; same data, 3M ( NCDWR ) ; same location, 2015, D. Lenat , 2L ( NCDWR ) . Richmond Co. , Big Branch , SR 1487, 35.02833 , -79.63833 , 2 May 2006 , E. Fleek , S. Beaty , 1F, 1L ( NCDWR ) ; Naked Creek , SR 1003, 35.08197 , -79.58909 , 17 April 2019 , C. Verdone , V . Holland , 2F ( NCDWR ) ; same location, 28 April 2019 , S. Beaty , C. Verdone , 3F ( NCDWR ) ; same data, 1F ( NCDWR ) .