7. Paranemoura perfecta (Walker, 1852)

Spotted Forestfly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:6128

(Figs. 3, 49‒54)

Nemoura perfecta Walker 1852:191 . Holotype male (British Museum of Natural History), Redman, Nova Scotia, Canada Nemoura punctipennis: Claassen, 1923:291 . Syn. Illies, 1966:218

Nemoura punctipennis: Needham & Claassen, 1925:221

Nemoura perfecta: Claassen, 1940:61

Nemoura (Paranemoura) perfecta: Ricker, 1952:41

Paranemoura perfecta: Illies, 1966:218

Nemoura (Paranemoura) perfecta: Harper & Hynes, 1971:1137

Paranemoura perfecta: Zwick, 1973:345

Nemoura (Paranemoura) perfecta: Hitchcock, 1974:103

Paranemoura perfecta: Baumann, 1975:54, 64 (in part), 66 (in part)

Paranemoura perfecta: Stewart & Stark, 1988:176

Paranemoura perfecta: Baumann, 1996:818

Paranemoura perfecta: Stark et al., 1998:119

Paranemoura perfecta: Stewart & Stark, 2002:203

Distribution. Canada: NB, NS, ON, PE, PQ. USA: CT, MA, MD, ME, MI, NC, NH, NY, PA, TN, VA, VT, WV (DeWalt et al. 2022)

Male. Macropterous. Body length 4.8–5.7 mm, forewing length 5.0– 5.5 mm (n = 11) Gills absent. Cerci simple and unmodified (Figs. 49‒51). Paraprocts undivided and broad, roughly triangular in shape. Epiproct ventral sclerite fully recurved over abdomen (Figs. 49‒50), ca. parallel-sided and longitudinally split into halves for ca. ⅔ length by the dorsal sclerite (Figs. 50‒52), basolateral margins gently rounded and sparsely covered by small spinules, notch lacking (Figs. 49‒50), anteriorly tapered to a narrow, parallel-sided rounded apex (Fig. 52); posteriorly-directed epihooks of dorsal sclerite smooth and acute (Figs. 49‒50).

Female. Macropterous. Body length 5.1–6.1 mm, forewing length 5.0– 6.4 mm (n = 8). Gills absent. Cerci simple and unmodified (Figs. 53‒54). The 8 th sternum is medially concave and not produced distally, Y-sclerite open along posterior margin (Figs. 53‒54); 7 th sternum is unsclerotized, with a short rounded medial projection extending ¼‒½ over the 8 th sternum (Figs. 53‒54).

Larva. The description by Harper & Hynes (1971) from southern Quebec and partial illustration in Baumann (1975) may refer to P. claasseni .

Comments. Paranemoura perfecta overlaps with P. claasseni in the northeastern Nearctic but has a much broader distribution, extending westward across southern Ontario to Michigan’s Upper Peninsula (Grubbs et al. 2012) and southward through the Appalachian Mountains to Tennessee and North Carolina (DeWalt et al. 2022).