Male genitalia. 21, 23, 25 Genital capsule, ventral view 22, 24, 26 Penis valve, lateral view 21, 22 N. mirabilis 23, 24 N. bimaculatus 25, 26 N. brevis.

 
 
  Part of: Smith DR, Naito T (2015) Studies on Adelestini (Hymenoptera, Tenthredinidae), particularly the long-tongued Nipponorhynchus Takeuchi of Japan. Journal of Hymenoptera Research 45: 1-14. https://doi.org/10.3897/JHR.45.5442