A dendrogram depicting the dytiscid faunal similarity among the water sub-basins of Mongolia. DGLB – Depression of Great Lakes Basin; GRB – Gobi River Basin; TRB – Tes River Basin; VLRB – Valley of Lakes River Basin; KhGRB – Khalkh Gol River Basin; KhRB – Kherlen River Basin; ORB – Orkhon River Basin; SRB – Selenge River Basin; ShRB – Shishkhed River Basin; BRB – Bulgan River Basin.