Alloperla stipitata Surdick, 2004

Grubbs, Scott A. & Baumann, Richard W., 2019, Alloperla clarki sp. nov. (Plecoptera: Chloroperlidae), a new species from the eastern Nearctic with discussion of a new species group, Zootaxa 4624 (2), pp. 241-255 : 248

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.

Figures

FIGURES 23–30. Alloperla stipitata, adult male epiproct. 23, Virginia, Fork Hollow, dorsal view, 800X; 24, Virginia, Fork Hollow, dorsal view, 1500X; 25, Virginia, Fork Hollow, anterior view, 3000X; 26, Virginia, Fork Hollow, dorsolateral, 3500X; 27, Virginia, Fork Hollow, lateral view, 3500X; 28, Virginia, Fork Hollow, anterior view, 3500X; 29, Virginia, Fork Hollow, lateral view, 1500X; 30, Virginia, Fork Hollow, lateral view, 3500X.

FIGURE 39–40. 39, Distribution map of Alloperla biserrata (black circles) and A. nanina (yellow circles) based on material examined during this study and valid literature data. Type localities are referenced by the larger, open circles. 40, Distribution map of A. clarki sp. nov. (black circles) and Alloperla stipitata (yellow circles) based on material examined during this study and valid literature data. Type localities are referenced by the larger, open circles. GA = Georgia, KY = Kentucky, NC = North Carolina, OH = Ohio, PA = Pennsylvania, SC = South Carolina, TN = Tennessee, VA = Virginia, WV = West Virginia.