Figures 5-10 in Heleniella helvetica sp. n., a cold stenothermic species inhabiting the upper Rhône catchment in central Switzerland [Diptera, Chironomidae, Orthocladiinae]

Figures 5-10. Male imago of Heleniella spp. Heleniella helvetica sp. n.: hypopygium, dorsal (5) and ventral (6); anal point in lateral view (7); anal point and gonocoxite in lateral view (8). H. extrema:anal point and inferior volsella, dorsal, after Albu (1972, Figure 2) (9); gonocoxite with sternapodeme, phallapodeme and right gonostylus, ventral, after Albu (1972, Figure 2) (10).