Sasquacapnia missiona (Baumann & Potter, 2007), 2019

Broome, Hannah Jean, Stark, Bill P. & Baumann, Richard W., 2019, A Review Of The Genus Bolshecapnia Ricker, 1965 (Plecoptera: Capniidae), And Recognition Of Two New Nearctic Capniid Genera, Illiesia 15 (1), pp. 1-26 : 20

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.

Figures

Figs. 55-60. Sasquacapnia missiona, male reproductive structures. All localities in Montana, Missoula Co., Grant Creek. 55. Male epiproct and terminal abdominal segments dorsal. 56. Epiproct and terminal abdominal segments dorsal. 57. Epiproct base dorsal (ds = dorsobasal sclerite). 58. Epiproct apex dorsal. 59. Epiproct apex lateral. 60. Epiproct lateral.

Figs. 61-66. Sasquacapnia missiona, male and female reproductive structures. All localities in Montana. 61. Flathead Co., Kootenai Creek, male epiproct and terminal abdominal segments dorsal. 62. Flathead Co., Kootenai Creek, epiproct oblique lateral. 63. Flathead Co., Kootenai Creek, epiproct base dorsal. 64. Flathead Co., Kootenai Creek, epiproct apex dorsal. 65. Flathead Co., Kootenai Creek vesicle ventral. 66. Missoula Co., Grant Creek, female abdomen and subgenital plate ventral.