Figure 2 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

Figure 2 - Genitalia in dorsal view (photo), with detailed lateral view of penis apex (line drawing) of all Graphoderus species. a–b Graphoderus adamsii c–d Graphoderus austriacus e–f Graphoderus bieneri g–h Graphoderus bilineatus i–j Graphoderus cinereus k–l Graphoderus elatus [dorsal view, processed by E. Binkiewicz] m–n Graphoderus fascicollis o–p Graphoderus liberus q–r Graphoderus manitobensis s–t Graphoderus occidentalis u–v Graphoderus perplexus [dorsal view, processed by E. Binkiewicz] w–x Graphoderus zonatus.