Capnia Pictet, 1841 sensu stricto

(Figs. 3–4, 24, 39)

Capnia (Capnia) Pictet, 1841 — Pictet 1841: 116. (original description, type species not designated).

Capnia Pictet, 1841 — Enderlein 1909: 391. (transfer of Capnia (Gripopteryx) into Gripopterygidae Enderlein, 1909, designation of Capnia nigra Pictet, 1840 (sic!; = Perla nigra Pictet, 1833) as the type species of Capnia); Kimmins 1947: 261. (define the identity of C. nigra (Pictet, 1833)) .

Capnia atra species group sensu Zhiltzova 2001 — Zhiltzova 2001: 424. (definition); Zhiltzova 2003: 324. (revision, partly refers to Capnia Pictet, 1841 sensu lato).

Capnia nearctica species group sensu Nelson & Baumann, 1989 — Nelson & Baumann 1989: 336. (definition and revision, partly refers to Capnia Pictet, 1841 sensu lato).

Diagnosis. Male epiproct: B-scl vestigial, fused with Ep-scl and turned into a vestigial Ll; Lb-scl large, divided from Ep-scl; Ep-scl laterally divided along entire length with connecting membrane, ventrally entire, caudal setae present; I-scl small, curved hook, Ec present. Male Pp: apical part long and wide; Fp long and medium wide, fused with Rp. Male Sg: fused with St 9 and Tg 9, vesicle lacking. Female Sg: rounded, entire or narrower than St 8; inner sclerites present. Male tergites: Tg 7 with process. Ventral thoracic sclerites: MPrs and MeFs triangular, MeFsp separated from MePfs. Macropterous wings: forewing A1 beyond a and R1 before r curved.

Species included. Type species: Perla nigra Pictet, 1833; Further species: Capnia ahngeri Koponen, 1949 (in Koponen & Brinck 1949), C. aligera Zapekina-Dulkeit, 1975a, C. atra Morton, 1896, C. khubsugulica Zhiltzova & Varykhanova, 1987, C. nearctica Banks, 1918, C. pygmaea (Zetterstedt, 1840), C. zaicevi Klapálek, 1914 . 4 are Transpalaearctic, 3 from the East Palaearctic (including 1 endemic to Mongolia) and 1 is Holarctic with Transberingian connection; 5 of these examined (see Appendix 1).

Remarks. This sensu stricto diagnosis of the genus is based on the type species, C. nigra (Pictet, 1833) . As it differs markedly from the most of the species previously placed in Capnia, the sensu stricto diagnosis confirms only eight species in this genus. Capnia kurnakovi Zhiltzova, 1978 (in Zhiltzova & Levanidova 1978) and C. alternata Zapekina-Dulkeit, 1975b may belong here, but no material was available for examination and illustrations and descriptions available lack exact details of the epiproct.