What Is Bolshecapnia Sasquatchi Ricker? Plus A New Species Of Bolshecapnia From Montana (Plecoptera: Capniidae) Author Baumann, Richard W. Department of Integrative Biology, Monte L. Bean Life Science Museum, Brigham Young University, Provo, UT 84602, USA E-mail: richard _ baumann @ byu. edu richard_baumann@byu.edu Author Potter, David S. Unity College in Maine, HC 78, Box 1, Unity, ME 04988, USA E-mail: dpotter @ unity. edu dpotter@unity.edu text Illiesia 2007 3 15 157 162 journal article http://doi.org/10.5281/zenodo.4754713 1f822ad9-a8f0-48d9-8679-f551d2107d4b 1854-0392 4754713 Bolshecapnia sasquatchi (Ricker) (Figs. 1-6, 13, 14) Capnia ( Bolshecapnia ) sasquatchi Ricker, 1965:482 . Holotype ♂ (Canadian National Collection). Fraser River , Agassiz , British Columbia . Bolshecapnia sasquatchi : Ricker & Scudder, 1975:338 . Material examined. All available specimens of B. sasquatchi were examined as part of this study. The following locality records represent B. sasquatchi . CANADA , British Columbia : Fraser River , Agassiz , 21 February 1958 , W.E. Ricker , 1 ♂ , Holotype ( CNCI ); Similkameen River , Cambie Creek Ski Area , Manning Provincial Park , 19 March 1983 , S.G. Cannings , 1 ♂ ( SMDV ); Skagit River , Manning Provincial Park , 18 March 1983 , S.G. Cannings , 1 ♂ ( SMDV ). UNITED STATES, Washington: Lewis Co. , Ohanapecosh River , Hwy 143, Mount Rainier National Park , 17 March 1970 , D.S. Potter and R.A. Haick , 2 ♂ ( BYUC ); 16 March 1973 , D.S. Potter and L.M. Preble , 1 ♂ ( BYUC ). Whatcom Co. , Razor Hone Creek , Hwy 542, Mount Baker , 4 March 1967 , K.E. Vander Mey , 2 ♂ , 6 ♀ ( BYUC ). Female. Body and wings dark brown to black, wings fumose, macropterous; length of forewings 8.5-9.5 mm ; length of body 7.5-9.0 mm. Subgenital plate broader than long, with only a few hairs on lateral margins, posterior margin straight and not notched (Figs. 13-14). Remarks. Bolshecapnia sasquatchi has a relatively short epiproct and the tip does not reach the margin of tergum eight in relaxed specimens. The dorsal plate is large and broad and extends to nearly ½ the length of the epiproct. The basal lobe is directed upward very slightly in a sinuate shape and ends in a broad apex. The tip is rounded dorsally and shaped like an upside down foot laterally (Figs. 1-6). The female subgenital plate of B. sasquatchi has a straight posterior margin, while in B. missiona it has a notch. Nebeker and Gaufin (1967) do not mention the median posterior notch in the subgenital plate in their description, nor is it shown in their illustration. However, we examined a large number of specimens from Montana and all had the notch.