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  Animalia
      Annelida
            Clitellata
              Hirudinea
                Euhirudinea
                    Arhynchobdellida
                           [Gnathobdellida]
                           [Pharyngobdellida]
                            Hirudinidae
                              Hirudinariinae
                                     Hirudo
                                             Hirudo medicinalis
                                     Poecilobdella
                                             Poecilobdella blanchardi
                              Macrobdellinae
                                     Limnobdella
                                             Limnobdella chiapasensis
                                             Limnobdella mexicana
                                             Limnobdella olivacea
                                             Limnobdella profundisulcata
                                             Limnobdella tehuacanea
                                     Macrobdella
                                             Macrobdella decora
                                             Macrobdella diplotertia
                                             Macrobdella ditetra
                                             Macrobdella sestertia
                                     Oxyuptychus
                                             Oxyuptychus antellarum
                                     Philobdella
                                             Philobdella floridana
                                             Philobdella gracilis
                                     Pintobdella
                                             Pintobdella cajali