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 Amphinemura standfussi Ris, 1902 SYNONYMY Amphinemura standfussi Ris, 1902 TYPE LOCALITY: England . DIAGNOSIS: Adults retain filamentous remnants of nymphal gills in the cervical region, unlike A. borealis which only retains small stubs. In this species, the epiproct is relatively short ( Fig. 160 ) especially in comparison to A. borealis ( Fig.155 ). From the dorsal aspect, the epiproct is triangular with a rounded tip ( Fig. 160 ). In lateral view, the epiproct is broadly rounded on the ventral margin and gradually narrows to a point which is directed towards the anterior ( Fig. 161 ). The epiproct shape is readily distinguished from A. borealis ( Fig. 156 ) which is more rectangular. Female sternum 8 forms two lobes posteriorly while sternum 7 is a simple parabola ( Fig. 162 ). The nymph has short, stout hairs on femora and cercal segments, whereas the hairs of A. borealis are much longer and more densely spaced. DISTRIBUTION—Global: Trans-Palearctic— Regional: AOB, POB*— Aimag: AR*, BU^, KhE*, KhG, SE^, TO*, UB*, ZA^. DISCUSSION: In Mongolia , A. standfussi was documented at a large variety of localities including large rivers, small streams, and lakes. Like most Mongolian Nemouridae , this species is widely distributed across the Palearctic and is well-studied in Europe, as well as extensively documented from Mongolia (Zhiltzova 1972, Zhiltzova 1979, Zhiltzova & Varykhanova 1984).