Fig. 3. Habrophlebia modesta. 



Hind 



wing. 



Fig. 4. Habrophlebia nervulosa. 



Forceps and penis, seen from above. 



Fig. 6. Rhithrogena insularis. 



Last abdominal segment, 

 seen from below. 



Fig. 2. Habrophlebia modesta. 



Forceps and penis, seen from above ; 



a penis, seen from side. 



Fig. 5. Habrophlebia nervulosa. 

 Hind wing. 



