FIGURES 55–59 in The concept of Compsoneuria Eaton, 1881 revisited in light of historical and new material from the Sunda Islands (Ephemeroptera: Heptageniidae: Ecdyonurinae)

FIGURES 55–59. Nymphal maxillae details of Notonurus sp. from Madagascar. Fig. 55: SEM view of the dentisetae, proximal dentiseta in red, distal dentisetae in yellow; Fig. 56: Same view in optical microscope; Fig. 57: SEM view of scattered setae on the ventral face of the galea; Fig. 58: Same view in optical microscope; Fig. 59: SEM view of the comb-shape setae on the crown of the galea.