Amphinemura standfussi Ris, 1902

Judson, Sarah W. & Nelson, C. Riley, 2012, 3541, Zootaxa 3541, pp. 1-118 : 32

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).