Diamesa goetghebueri Pagast, 1947

(Fig. 2 C, D)

The species is not easily distinguished from D. lindrothi (see above). It could be suspected that the digitiform ( D. lindrothi) or flat ( D. goetghebueri) aspect of dorso-lateral lobe of inferior volsella (Fig. 2) depends on the angle of visualization. However, an accurate examination of many specimens from Estellette and Adamello glacial streams, with the male genitalia rigorously mounted in the same dorsal position, confirms the presence both of a digitiform and a flat dorso-lateral lobe and supports the separation of two species (see figures). According to Serra-Tosio (1973), D. goetghebueri is endemic from the Alps (Rossaro & Lencioni 2015a, b).