Sasquacapnia missiona (Baumann & Potter, 2007),

New combination http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:505897

(Figs. 55-66)

Bolshecapnia missiona Baumann & Potter, 2007:159 .

Holotype ♂ (California Academy of Sciences), Grant Creek, Snow Bowl Road, Missoula Co., Montana

Distribution. UNITED STATES: MT (DeWalt et al. 2018)

Material examined. UNITED STATES: Montana: Flathead Co., Alpha Creek, junction South Fork Flathead River, Hungry Horse Dam, 26 March 1966, P. Milam, 1♂ (BYU paratype) . Canyon Creek, South Fork Road, 25 March 1973, D.S. Potter, J.A. Stanford, 7♂, 4♀ (BYU, FLBS paratypes) . Kootenai Creek, junction Middle Fork Flathead River, 26 March 1966, P. Milam, 8♂, 14♀ (BYU, FLBS paratypes) . Lake Co., Six Mile Creek, between Swan Lake and Big Fork, 6 March 1966, P. Milam, 1♂ (BYU paratype) . Missoula Co., Grant Creek, Snow Bowl, 8 March 1970, D.S. Potter, R.A. Haick, 13♂, 3♀ (BYU paratypes) . Same site, 15 March 1971, D.S. Potter, 4♂, 2♀ (BYU paratypes) . Same site, 15 March 1971, D.S. Potter, 15♀ (CAS paratypes) .

Male epiproct (n = 3). Length 920-928 μm, width at midlength about 70 μm, greatest width near base 143 μm. Epiproct body long and slender (Figs. 55- 56, 61-62), bearing a prominent pair of triangular dorsobasal sclerites which cover most of the basal third of the epiproct (Fig. 57, 63); epiproct abruptly narrowed, and upturned beyond the apical margin of the dorsobasal sclerites (Figs. 57, 60). Apex complexly lobed in dorsal aspect and displaying a membranous protruding structure in lateral aspect (Figs. 58-59, 64). Median groove extends from near apex to basal area of the dorsobasal sclerites (Fig. 56, 61); dorsobasal sclerites approximately 345-360 μm.

Tergal process. Absent, but terga 8-9 bear patches of long setae (Fig. 55).

Female subgenital plate. Details of this structure are show below (Fig. 66) and in figs. 15-16 in Baumann & Potter (2007). The structure generally projects beyond the posterior margin of sternum 8, and bears a small apical notch.