Paranemoura claasseni Baumann, 1996

Grubbs, Scott A. & Baumann, Richard W., 2023, The Nemourinae (Insecta, Nemouridae) of the eastern Nearctic, Zootaxa 5306 (1), pp. 1-53 : 17

6. Paranemoura claasseni Baumann, 1996

Boreal Forestfly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:6127

( Figs. 43‒48 )

Paranemoura claasseni Baumann, 1996:822 . Holotype male (United States National Museum), Crystal Spring , Kennebec Co., Maine, USA

Distribution. Canada: NB, NS, PE, PQ. USA: ME, NH ( DeWalt et al. 2022)

Male. Macropterous. Body length 4.1–6.5 mm, forewing length 4.6–5.1 mm (n = 8). Gills absent. Cerci simple and unmodified ( Figs. 43‒46 ). Paraprocts undivided and broad, roughly triangular in shape. Epiproct ventral sclerite fully recurved over abdomen ( Figs. 43‒44 ), markedly expanded in medial ½, split longitudinally halves for ca. ¾ of length by dorsal sclerite ( Figs. 44‒46 ), basolateral margins gently rounded posteriorly then demarcated by a distinct notch ( Figs. 43‒44 ), sparsely covered by small spinules, anteriorly tapered to a rounded, subtriangular apex ( Figs. 45‒46 ); epihooks of dorsal sclerite apically armed with irregular jagged teeth, positioned posterior to ventral sclerite ( Figs. 43, 46 ).

Female. Macropterous. Body length 4.5–7.0 mm, forewing length 5.4–5.7 mm (n = 5). Gills absent. Cerci simple and unmodified ( Figs. 47‒48 ). The 8 th sternum is medially concave and not produced distally, Y-sclerite of sternum closed posteriorly by narrow dark margin ( Figs. 47‒48 ); 7 th sternum is unsclerotized, with a short rounded medial projection extending ¼‒½ over the 8 th sternum ( Figs. 47‒48 ).

Larva. The description by Harper & Hynes (1971) may refer either to P. claasseni or P. perfecta . Stark (2017) also provided a partial illustration of the foreleg.

Comments. Paranemoura claasseni is distributed in the northeastern Nearctic region ( DeWalt et al. 2022).

Figures

FIGURES 43‒48. Paranemoura claasseni. 43, male abdominal terminalia, lateral view; 44, USA, Maine, Crystal Brook, epiproct, dorsolateral view; 45, male abdominal terminalia, dorsal view; 46, Canada, New Brunswick, Williams Brook, epiproct, dorsal view; 47, female abdominal terminalia, ventral view; 48, Canada, New Brunswick, Williams Brook, female abdominal terminalia, ventral view. c = cercus, ds = dorsal sclerite, ep = epihook, vs = ventral sclerite.