Soyedina sheldoni Grubbs & Baumann, 2019

Grubbs, Scott A. & Baumann, Richard W., 2023, The Nemourinae (Insecta, Nemouridae) of the eastern Nearctic, Zootaxa 5306 (1), pp. 1-53 : 41-42

21. Soyedina sheldoni Grubbs & Baumann, 2019

Mountain Man Forestfly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:507137

( Figs. 139–144 )

Soyedina sheldoni Grubbs & Baumann 2019:241 . Holotype male (Illinois Natural History Survey ), Lower Creek , Mount Mitchell State Park, Yancey Co., North Carolina, USA

Distribution. USA: NC ( DeWalt et al. 2022)

Male. Macropterous. Body length 6.5–8.5, forewing length 4.5–6.0 mm (n = 26, in Grubbs and Baumann 2019). Gills absent. Cerci simple and unmodified. Paraprocts with two lobes, inner lobes lightly sclerotized and inconspicuous, outer lobes heavily sclerotized, large and robust for genus, broadly rounded basally and dorsally, recurved in anterior ⅓, slightly concave laterally, terminating anteriorly in medially-directed triangular flaps ( Fig. 143 ). Epiproct asymmetric, typical for genus ( Fig. 139 ); ventral sclerites partially recurved over abdomen, distinctly asymmetric, apically rounded ( Figs. 139‒140 ); dorsal sclerites distinctly asymmetric, appearing scaly at higher magnifications ( Figs. 140‒142 ), open apically, inner member heavily sclerotized, apically either slightly tapered or straight-sided distally ( Figs. 140‒141 ).

Female. Macropterous. Body length 8.5–9.5, forewing length 5.5–6.5 mm (n = 11, in Grubbs & Baumann 2019). Gills absent. Cerci simple and unmodified. Subgenital plate well-developed, subtriangular in shape; base broad, extending from posterior of seventh sternum entirely over eighth sternum and approximately ¼ over ninth sternum; terminating in broadly-rounded apex ( Fig. 144 ).

Larva. Undescribed.

Comments. Soyedina sheldoni is presently known from the southern Appalachian Highlands region of western North Carolina ( Grubbs & Baumann 2019) .

Figures

FIGURES 139‒144. Soyedina sheldoni. 139, USA, North Carolina, tributary to Holder Creek, epiproct, ventral view; 140, USA, North Carolina, Holder Creek, epiproct apex, ventral view; 141, USA, North Carolina, Holder Creek, epiproct apex, lateral view; 142, USA, North Carolina, Holder Creek, epiproct, caudal view; 143, USA, North Carolina, tributary to Holder Creek outer paraproct lobe, lateral view; 144, USA, North Carolina, Lower Creek, female, abdominal terminalia, ventral view. ds = dorsal sclerite, im = inner member, opl = outer paraproct lobe, vs = ventral sclerite.