Alloperla clarki sp. nov. (Plecoptera: Chloroperlidae), a new species from the eastern Nearctic with discussion of a new species group Author Grubbs, Scott A. Author Baumann, Richard W. text Zootaxa 2019 2019-06-28 4624 2 241 255 journal article 26359 10.11646/zootaxa.4624.2.7 83eecd69-03b2-4cc5-beaf-e3682312ffb4 1175-5326 3259313 90BF05DF-3EC4-4E77-A1DC-EBDF6EC4C83A Alloperla stipitata Surdick, 2004 Blue Ridge Sallfly http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:3654 ( Figs. 23–30 & 40 ) Alloperla stipitata Surdick, 2004:21 . Holotype male (USNM), small stream, north of Sherando Lake , Augusta Co. , Virginia (examined) Distribution. USA : VA ( DeWalt et al. 2018 ) Material examined. USA , Virginia , Bland Co. , Kumberling Creek , Sulphur Springs Creek , 18 May 2017 , B.C Kondratieff & C. Verdone , 3 males ( CSUC ) ; Botetourt Co. , spring fed stream, Blue Ridge Parkway , 31 May 2016 , B.C Kondratieff & C. Verdone , 1 male ( CSUC ) ; Greene Co. , Fork Hollow , Ranger Station , nr. Simmons Gap , Shenandoah National Park , 3 June 2016 , B.C Kondratieff & C. Verdone , 3 males ( CSUC ) ; Montgomery Co. , Poverty Creek , Poverty Hollow , Rt 708, 0.5 miles from Rt 460, 17 June 1978 , 1 male , B.C. Kondratieff ( CHNC – A. biserrata paratype ) . Amended description – Male. Tergum 10 divided mesally by epiproct and reduced cowl into two hemitergal lobes; lobes bearing dense matting of long setae ( Figs. 23–24 ). Epiproct length (L) 150 µm , maximum width ( MW ) 62 µm , L:MW ratio = 2.4. In dorsal view the epiproct is widest in medial ½, tapering both anteriorly and distally ( Figs. 23–24 ). The dorsal surface is covered by a dense matting of long hairs except for the anterior 1/5, which is entirely bare ( Figs. 23–26 ). The apical notch is subtriangular and extends anteriorly and ventrally as a groove between paired, serrated apical margins ( Figs. 25–28 ); 5 distinct teeth are present ( Figs. 29–30 ); the serrated apex is linear ventrally ( Figs. 29–30 ). In lateral view the epiproct is broadest medially ( Fig. 29 ). The stem is slightly longer than the serrated apex and covered by a dense matting of long hairs except for a narrow bare band laterally near the hinge ( Fig. 29 ). The lateral portion of the serrated apex is bare except for a single line of 5–6 hairs plus a few additional accessory hairs ( Fig. 30 ). Adult males (and females) are pale yellow in alcohol. The head lacks any darkened markings. The pronotum has a continuous pale yellow margin and the medial 75% of the segment is only slightly darker. Comments. Alloperla stipitata is known only from Virginia ( Fig. 40 ), with many recent locality records provided by Dr. Boris Kondratieff ( CSUIC ) as by-catch specimens to three species studied in detail in Verdone & Kondratieff (2017) . This species may be distributed further northward along the Blue Ridge Mountains through Maryland to southern Pennsylvania .