Prostoia ozarkensis Baumann & Grubbs, 2014

Grubbs, Scott A. & Baumann, Richard W., 2023, The Nemourinae (Insecta, Nemouridae) of the eastern Nearctic, Zootaxa 5306 (1), pp. 1-53 : 24-25

11. Prostoia ozarkensis Baumann & Grubbs, 2014

Ozark Forestfly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:463936

( Figs. 77‒84 )

Prostoia completa: Ernst & Stewart, 1985:638

Prostoia completa: Stewart & Stark, 1988:182

Prostoia completa: Poulton & Stewart, 1991:29

Prostoia completa: Stewart & Stark, 2002:209

Prostoia completa: Webb, 2002:253

Prostoia ozarkensis Grubbs et al. 2014:20 . Holotype male (United States National Museum), Bryant Creek , Webster Co., Missouri, USA

Distribution. USA: AR, IL, MO, OK ( DeWalt et al. 2022)

Male. Macropterous. Body length 6.0– 6.5 mm, forewing length 6.4–7.8 mm (n = 7). Gills absent. Cerci simple and unmodified. Paraprocts with lightly sclerotized, undivided lobes. Epiproct ventral sclerite sclerotized throughout length, narrow in both dorsal and lateral profiles, and fully recurved over abdomen ( Figs. 77‒79 ); base narrow gradually widening for ca. ⅔ of length ( Fig. 77 ), tip not deflected upward and rounded apically ( Figs. 79‒81 ); dorsal sclerite reduced and to lateral arms in basal area ( Figs. 82‒83 ), which are short, triangular-shaped, and somewhat laterally-flared ( Fig. 82 ).

Female. Macropterous. Body length 7.0– 7.7 mm, forewing length 7.4–9.0 mm (n = 7). Gills absent. Cerci simple and unmodified. The 7 th and 8 th sterna fused medially ( Fig. 84 ), the 8 th sternum is modified slightly as a subgenital plate, with faint medial excavation and scarcely developed posterolateral corners ( Fig. 84 ).

Larva. The partial illustrations in Poulton & Stewart (1991) likely refer to this species.

Comments. See comments under P. completa .

Figures

FIGURES 77‒84. Prostoia ozarkensis. 77, USA, Arkansas River, epiproct, dorsal view; 78, USA, Oklahoma, Baron Fork, epiproct, dorsal view; 79, USA, Arkansas River, epiproct, lateral view; 80, USA, Oklahoma, Baron Fork, epiproct apex, lateral view; 81, USA, Oklahoma, Baron Fork, epiproct apex, lateral view; 82, USA, Oklahoma, Baron Fork, epiproct base, caudal view; 83, USA, Illinois, Hutchins Creek, epiproct base, caudal view; 84, USA, Illinois, Hutchins Creek,, female abdominal terminalia, ventral view. c = cercus, la = lateral arm, sgp = subgenital plate, vs = ventral sclerite.