Figures 17–23 in Two further species groups and new species among Australian Hydrobiosella Tillyard: new species from south-eastern Australia (Trichoptera: Philopotamidae)

Figures 17–23. Hydrobiosella spp.; 17, Hydrobiosella letti Korboot., wings. 18–23, Hydrobiosella spp., male genitalia in dorsal, lateral and part ventral views; 18–20, Hydrobiosella fibra sp. nov.; 18, dorsal; 19, lateral; 20, ventral, mesodistal margin of segment IX; 21–23, Hydrobiosella bifurca sp. nov.; 21, dorsal; 22, lateral; 23, ventral, mesodistal margin of segment IX.