Figure 1. SEM images of the upper lip and paragnaths of Anonyx nugax (a–c) and Tmetonyx cicada (d– f). (a) Upper lip and epistome in ventral view. (b) Upper lip in side view. (c) Paragnaths in ventral view. (d) Upper lip and epistome in ventral view. (e) Upper lip in side view. (f) Paragnaths in ventral view. Abbreviations: as – arch-shaped setal row on paragnaths; ed – depressions on epistome articulating with mandibles; ep – epistome; lb – labrum; lp – lateral lappet of paragnath; pd – depressions on paragnath for molar processes; pe – medial projection on epistome; pk – anterior knoll on paragnaths; sp – median spine on paragnath. Scale bars: A–C, E, F: 500 µm; D: 200 µm.