Figure 2 from: Auychinda C, Sartori M, Boonsoong B (2020) Vietnamellidae (Insecta, Ephemeroptera) of Thailand. ZooKeys 902: 17-36. https://doi.org/10.3897/zookeys.902.46844

Figure 2 Vietnamella maculosa sp. nov. A ventral view of head with outer projection and small inner projection (arrow) B labrum C labium D left mandible E right mandible F maxilla G hypopharynx. Scale bars: 1 mm (A); 0.1 mm (B–G).