Nonnullidens anga sp. nov. nymphal mouthparts. A. Labrum, dorsal view; B. Emargination of the labrum; C. Right mandible; D. Maxilla; E. Labium. Scale bars: 100 µm (A, C, E); 50 µm (B); 200 µm (D).

 
 
  Part of: Sartori M, Salles FF (2025) The Leptophlebiidae of New Guinea (Ephemeroptera, Choroterpinae, Thraulini). ZooKeys 1245: 41-175. https://doi.org/10.3897/zookeys.1245.141723