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Organism
  Animalia
         [Metazoa]
      Platyhelminthes
        Rhabditophora
               [Archoophora]
               [Turbellaria]
          Neodermata
            Trematoda
              Digenea
                    Azygiida
                      Hemiurata
                             [Didymozoata]
                          Hemiuroidea
                            Derogenidae
                              Derogeninae
                                     [Genarchinae]
                                     [Liocercinae]
                                     [Liopyginae]
                                     [Orthoruberinae]
                                     Progonus
                              Halipeginae
                                     [Monovitellinae]
                                     Austrohalipegus
                                     Caudovitellaria
                                     Chenia
                                     Genarchella
                                             Genarchella genarchella
                                                   [Derogenes tropicus]
                                     Magnibursatus
                                           [Tyrrhenia]
                                     Monovitella
                                     Tangenarchopsis
                                           [Tangiopsis]
                                     Thometrema