Pteronarcys scotti Ricker, 1952

Myers, L. W. & Kondratieff, B. C., 2017, Larvae Of North American Species Of Pteronarcys (Plecoptera: Pteronarcyidae), Illiesia 13 (16), pp. 192-224 : 220-221

Pteronarcys scotti Ricker, 1952

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:470668

( Figs. 58–66 )

Remarks and Distribution. When viewed dorsally the projections of AB 1-7 in P. scotti are less developed than those observed in P. proteus , outer margins of largest projections appearing nearly straight in dorsal view ( Figs. 59 , 62 , 66 ). Viewed laterally the spines of AB5-7 appear as low rugose ridges that are nearly indiscernible, projecting past the posterior margin of the segment minimally in lateral view ( Figs. 58, 61 ). Measured in dorsal view AB4 POM/SW <0.15; AB6 ≤ 0.12 ( Figs. 10 , 59 , 62 ). Additionally, this species lacks the distinctive medial yellow antennal band that is present in P. proteus ( Figs. 64 , 66 ). This species is restricted to the Appalachians with records available from Pennsylvania, Virginia, North Carolina, Georgia, South Carolina, and Tennessee ( Nelson 2000).

Material Examined. USA, Georgia: Murray Co., Jigger Creek , East Cowpen Rd., N 34.9626, W 84.6386, 9 February 2017, 2 L, C. Verdone & B.C. Kondratieff ( CSUIC) ; Rabun Co., Trib. to Overflow Creek, Overflow Creek Rd., N 34.9539, W 83.2216, 10 February 2017, 2 L, C. Verdone & B.C. Kondratieff ( CSUIC) ; North Carolina: Alleghany Co., Little River , SR 1128, N 36.4677, W 81.1333, 5 September 2013, 3 L, S. Beaty, V. Holland & M. Walters ( NCDEP) ; Avery Co., Horse Creek , US 19E, N 36.1016, W 81.9864, 7 August 2012, 2 L, M. Walters, E. Fleek & M. Hale ( NCDEP) ; Buncombe Co., S. Hominy Creek , Dale Pen Rd., N 35.4882, W 82.7425, 1 June 2010, 10L, V. Holland & S. Beaty ( NCDEP) ; Caldwell Co., Jackson Camp Creek , SR 1372, N 36.0694, W 81.5925, 23 May 2011, 10 L, S. Beaty, E. Fleek & D. Black ( NCDEP) ; Cherokee Co., Worm Creek , off US 19, N 35.1959, W 83.7893, 11 February 2015, 3 L, E. Fleek, V. Holland & M. Walters ( NCDEP) ; Graham Co., Tulula Creek, SR 1275, N 35.3205, W 83.8025, 2 September 2014, 3 L, S. Beaty, M. Walters & V. Holland ( NCDEP) ; Haywood Co., East Fork Pigeon River , Off US 276, Hungry Creek, N 35.4105, W 82.8100, 12 July 2006, 2 L, S. Beaty ( NCDEP); Cove Creek , nr. Maggie Valley, 22 May 1970, ♂, Exv, B.C. Kondratieff & R.F. Kirchner ( CSUIC) ; Henderson Co., Mills River , SR 1337, N 35.3986, W 82.5950, 15 August 2007, 3 L, S. Beaty, M. Walters & D. Black ( NCDEP) ; Mills River , NC 191- 280, N 35.3913, W 82.5680, 27 August 2010, 10 L, M. Walters, E. Fleek & T. Mormon ( NCDEP) ; Jackson Co., Moses Creek, SR 1739, N 35.3147, W 83.1255, 16 September 2015, 10 L, S. Beaty ( NCDEP) ; Macon Co., Clear Creek, SR 1618, N 35.0044, W 83.2113 W, 15 July 2014, 4 L, S. Beaty, E. Fleek & V. Holland ( NCDEP) ; Cullasaja River , Rt. 28 N of Falls, 24 May 1993, ♂, 3 Exv, B.C. Kondratieff & R.F. Kirchner ( CSUIC) ; McDowell Co., Catawba River , SR 1274, N 35.6144, W 82.2300, 10 July 2012, 4 L, M. Walter, C. Tyndall, E. Fleek & T. Morman ( NCDEP) ; Transylvania Co., North Fork French Broad River, SR 1326, N 35.2013, W 82.8566, 27 July 2010, 10 L, S. Beaty, E. Fleek & V. Holland ( NCDEP) ; Indian Creek , US 64, N 35.1266, W 82.9147, 14 July 2014, 5 L, S. Beaty, E. Fleek & V. Holland ( NCDEP) ; Watauga Co., Norris Fork, SR 1337, N 36.2800, W 81.6766, 27 August 2013, 3 L, S. Beaty, E. Fleek & D. Black ( NCDEP) ; Wilkes Co., Garden Creek , SR 1739, N 36.3903, W 81.0711, 8 March 2014, 2L, V. Holland, M. Walters & E. Fleek ( NCDEP) ; Tennessee : Carter Co., Doe River ca. 0.5 mi. below Roan Mt. St. Park Welcome Center, 12 April 1998, ♂, Exv, D.A. & E.L. Etnier ( CSUIC) . Sevier Co., Little River , Elkmont, 14 May 1939, ♀, Exv, Frison & Ross ( CNC Paratypes) ; West Prong Pigeon River , at park headquarters, GSMNP, 21 April 1949, L, 3 Exv, W.E. Ricker ( CNC) . Cades Cove Creek , 3.2 mi E Cable Mill, GSMNP, ♂, ♀, Exv, B.C. Kondratieff ( CSUIC) ; Virginia : Floyd Co., Dodd Creek, Rt. 8, 20 March 1980, ♂, Exv, B.C. Kondratieff, reared 28 March 1980 ( CSUIC) ; Grayson Co., Laurel Creek, Rt. 603, 22 April 1979, ♀, Exv, R. Firth, reared 9 May 1979 ( CSUIC) Pittsylvania Co., Sandy Creek, Rt. 58, 11 April 1981, ♀, Exv, B.C. Kondratieff, reared 20 April 1981 ( CSUIC) ; Washington Co., Big Laurel Creek , Rt. 603, Konnarock , 19 April 1980, 3♀, 3 Exv, B.C. Kondratieff, reared 15 May 1980 ( CSUIC) .

Figures

Fig. 58.-61. Pteronarcys scotti. 58 Abdomen lateral; Tennessee: Sevier Co., Little River. 59. Abdomen dorsal view; Tennessee: Sevier Co., Little River. 60. Supra-antennal process; Tennessee: Sevier Co., Little River. 61. Abdomen lateral view; Tennessee: Carter Co., Cades Cove Creek.

Fig. 62-65. Pteronarcys scotti. 62. Abdomen dorsal view; Tennessee: Carter Co., Cades Cove Creek. 63. Supraantennal process; Tennessee: Carter Co., Cades Cove Creek. 64. Antennae; Tennessee: Sevier Co., Little River. 65. Pronotum; Tennessee: Sevier Co., Little River.

Fig. 66. Pteronarcys scotti. Larval habitus; North Carolina: Macon Co., Cullasaja River.

Fig. 10. POM/SW ratio AB2-AB8 for P. biloba (n=11), P. proteus (n=17) and P. scotti (n=14)