FIGURES 19–24. Hagenulopsis. Figs 19–21, H. lipeo. 19 in Revision of the South American species of Hagenulopsis Ulmer and Askola Peters (Ephemeroptera: Leptophlebiidae) with description of six new species

FIGURES 19–24. Hagenulopsis. Figs 19–21, H. lipeo. 19, male imago, general aspect, lateral view; 20, head, dorsal view; 21, head, lateral view. Figs 22–24, H. diptera. 22, male imago, general aspect, lateral view; 23, head, dorsal view; 24, head, lateral view.