Figure 4 from: Schmitt M, Uhl G (2017) Oulema septentrionis and O. erichsonii are neither conspecific nor melanic variants of O. melanopus as assessed by micro CT analysis of their lectotypes (Insecta, Coleoptera, Chrysomelidae, Criocerinae). In: Chaboo CS, Schmitt M (Eds) Research on Chrysomelidae 7. ZooKeys 720: 121-130. https://doi.org/10.3897/zookeys.720.19760

Figure 4 - Oulema erichsonii , lectotype; a median lobe with flagellum lateral b apex of median lobe with flagellum dorsal c flagellum (not to scale). 3D reconstructed microCT-scans.