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Organism
  Animalia
      Arthropoda
            Insecta
                    Hemiptera
                        Nepomorpha
                          Nepoidea
                            Nepidae
                              Ranatrinae
                                Ranatrini
                                     Ranatra
                                             Ranatra australis
                                             Ranatra buenoi
                                             Ranatra drakei
                                             Ranatra nigra