Bdelloidea
Bdella Latreille, 1795
Biscirus Thor, 1913
Hexabdella Verrill, 1872
Hoplomolgus Berlese
Molgus Dujardin, 1842
Monotrichobdella Baker & Balock, 1944
Neomolgus Oudemans, 1938
Odontoscirus Thor, 1913
Polytrichus van der Schyff, Theron & Ueckermann, 2003
Rigibdella Tseng, 1978
Spinibdella Thor, 1930
Tetrabdella Hernandes & Feres, 2006
Trachymolgus Berlese, 1924
