Figure 5 from: Enkhnasan D, Boldgiv B (2019) Biogeography of predaceous diving beetles (Coleoptera, Dytiscidae) of Mongolia. ZooKeys 853: 87-108. https://doi.org/10.3897/zookeys.853.33908

Figure 5 Relationship of generic and species diversity of dytiscids in the water sub-basins of Mongolia according to their biogeographic regions. Abbreviations: AO – species of Arctic origin; BO – Boreal species; HO – Holarctic species; TU – Turanian species; ME – Mediterranean elements; OR – Oriental; PLA – Palearchearctic; PL – species distributed throughout the whole Palearctic; SZ – species of the Steppe zone.