Pteronarcys biloba Newman, 1838

Myers, L. W. & Kondratieff, B. C., 2017, Larvae Of North American Species Of Pteronarcys (Plecoptera: Pteronarcyidae), Illiesia 13 (16), pp. 192-224 : 202

Pteronarcys biloba Newman, 1838

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:470669

( Figs. 13–17 )

Remarks and Distribution. Previous descriptions of the larva of this species are adequate. The first description was provided by Smith (1917). Claassen (1931) later provided a more detailed description. This species can be reliably separated from other members of the genus based on the presence of the conspicuous abdominal projections on abdominal segments 1-8 ( Figs. 13, 14 ), the lack of a prominent acute lateral projection on the mesothorax ( Fig. 15 ), and the acute angle (APP> 55) of the anterior pronotal projection ( Figs. 15 , 17 ). The distribution of this species extends from Canadian Maritime Provinces south to Alabama ( Nelson 2000).

Material examined. Canada, New Brunswick: Gloucester Co., Tobusintac River, off Hwy 8, 17 June 1993, 4♀, 4 L, B.C. Kondratieff & R.W. Baumann ( CSUIC) ; Restigouche Co., Trout Brook , 5 June 1956, ♂, Exv., F.P. Ide & J.K. Malia ( CNC) ; Prince Edward Island: Prince Co., Mill River, Hwy 148 L. of Howlan , 19 June 1993, 2 Exv, B.C. Kondratieff & R.W. Baumann ( CSUIC) ; USA, Georgia: Gilmer Co., Mountaintown Creek, State Hwy 2152, L 34.7500, W 85.5544, 9 February 2017, 4 L, B.C. Kondratieff & C. Verdone ( CSUIC) ; New York: Albany Co., Catskill Creek , Rt. 145 nr. Cooksburgh , N 42.4183, W 74.2054, 21 May 2008, Exv, L. Myers, B.C. Kondratieff & R.W. Baumann ( LCRI) ; Cattaraugus Co., Connoisarauley Creek, East Otto Rd. , Ashford , N 42.4247, W 78.6976, 24 June 2009, Exv, E.L. White ( LCRI) ; Clinton Co., Trib. to Canfield Brook, jct. Kennedy & Bart Merrill Rd., N 44.7216, W 73.6687, 14 March 2009, L, L. Myers ( LCRI); True Brook , Bridge on True Brook Rd., N 44.6470, W 73.7990, 12 November 2009, L, C. Binggeli & A. Grooves ( LCRI); Essex Co., North Branch Boquet River , Moss Rd. , Lewis, N 44.3144, W 73.5176, 6 April 2010, ♀, Exv, L. Myers, reared 25 April 2010 ( LCRI); Roaring Brook , River Rd. nr. Lake Placid, N 44.1503, W 73.7674, 22 May 2007, ♂, Exv, L. Myers, reared 27 May 2007 ( LCRI); West Branch Ausable River , Notch on Rt. 86 in Wilmington, 10 May 2006, ♀, Exv, L. Myers ( LCRI); Franklin Co., North Branch Saranac River , Loon Lake Rd., N 44.5392, W 74.0515, 31 May 2006, Exv, L. Myers, reared 27 May 2006 ( LCRI); Lewis Co., Indian River , Cemetery Rd. off Rt. 812, N 43.9753, W 75.3701, 5 June 2008, Exv, L. Myers & R. Mowrey ( LCRI); Independence River , Pine Grove Rd. N 43.7301, W 75.3655, 5 June 2008, ♀, Exv, L. Myers & R. Mowrey ( LCRI); Saint Lawrence Co., Trib. to Little River , Rt. 3 nr. Star Lake, N 44.1905, W 75.0633, 2 Exv, 5 June 2008, L. Myers & R. Mowrey ( LCRI); Warren Co., Hudson River, Glen Athol Rd ., N 43.5786, W 73.8598, 30 June 2007, L, L. Myers & B.C. Kondratieff ( LCRI); Vly Brook, Rt. 8 nr. Wevertown , N 43.6529, W 73.9228, 2 May 2008, ♂, Exv, L. Myers & R. Mowrey, reared 2 June 2008 ( LCRI); Tennessee: Carter Co., Doe River ca. 0.5 mi. below Roan Mountain State Park Welcome Center , 12 April 1998, ♂, Exv, D.A. & E.L. Etnier, reared 17 April 1998 ( CSUIC); West Virginia: Pocahontas Co., East Fork Greenbrier River, Forest Rd. 51 off Rt. 28, 26 April 1987, 3 L, B.C. Kondratieff & R.F. Kirchner ( CSUIC) ; Randolph Co., Gandy Creek , Rt. 40, 15 May 1990, 2 L, B.C. Kondratieff, J. Welch & R.F. Kirchner ( CSUIC) .

Figures

Fig. 13-16. Pteronarcys biloba. 13. Abdomen lateral view; New York: Franklin Co., N. B. Saranac River. 14. Abdomen dorsal view; New York: Franklin Co., N. B. Saranac River. 15. Head and Pronotum dorsal view; New York: Franklin Co., N. B. Saranac River. 16 Supra-antennal process dorsal view; New York: Franklin Co., N. B. Saranac River.

Fig. 17. Pteronarcys biloba - Larval habitus; New York: Clinton Co., Tributary to Canfield Brook.