Subclass Euhirudinea Lukin, 1956 - true leeches see Subclass Hirudinida
   Order Rhynchobdellida Blanchard, 1894
     Family Glossiphoniidae Vaillant, 1890
       1 Subfamily Theromyzinae Sawyer, 1986
       2 Subfamily Glossiphoniinae Johnson, 1816
       3 Subfamily Haementeriinae Autrum, 1939