Figure 4 from: Tan J-L, Carpenter JM, van Achterberg C (2018) An illustrated key to the genera of Eumeninae from China, with a checklist of species (Hymenoptera, Vespidae). ZooKeys 740: 109-149. https://doi.org/10.3897/zookeys.740.22654

Figure 4 Labial palpi (a, aa) and metasomal segment I (b, bb): c, cc part of mesosoma, showing tegula: a–c Calligaster cyanoptera de Saussure aa–cc Discoelis zonalis (Panzer).