Figure 8 from: Holmgren S, Angus R, Jia F, Chen Z-n, Bergsten J (2016) Resolving the taxonomic conundrum in Graphoderus of the east Palearctic with a key to all species (Coleoptera, Dytiscidae). ZooKeys 574: 113-142. https://doi.org/10.3897/zookeys.574.7002 - Holmgren, Sandra (2016)