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  Animalia
      Arthropoda
            Insecta
                    Blattodea
                            Blattidae
                                     Blatta
                                             Blatta orientalis
                              Blattinae
                                     Eurycotis
                                             Eurycotis mexicana
                                     Periplaneta
                                             Periplaneta americana
                                             Periplaneta australasiae
                                             Periplaneta brunnea