3541 Author Judson, Sarah W. Author Nelson, C. Riley text Zootaxa 2012 2012-11-06 3541 1 118 journal article 1175­5334 505937B0-9F57-4068-82E6-8553826DD5AA Capnia DIAGNOSIS: Adults of Mongolian Capnia species , unlike others throughout the Holarctic, have a distinct twopart epiproct with a simpler lower section and a more varied upper section ( Fig. 40 ). The epiproct tapers to an apical point which is more broadly rounded in the upper section than the lower. The female subgenital plate is not produced past the margin of sternum 8. In the center of the plate is a darkly sclerotized region, generally rectangular in shape ( Fig. 41 ). The R vein in adult wings is curved anteriorly at its origin, whereas in most other capniid genera, besides Mesocapnia , this vein is straight. Nymphs are indeterminable to genus at this time since no consistent characters have been found to separate them from Mesocapnia ; although, various hair characters have been proposed for discrimination (Stewart & Stark 2002). Within the Mongolian species, head coloration may be useful though we did not have enough specimens to makecomparisons between genera and species. DISTRIBUTION—Global: Holarctic— Regional: AOB, IDB— Aimag: BO^, KhG, UB*, ZA. DISCUSSION: Based on our collections, Capnia are relatively common in Mongolia compared to other capniids.