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  Animalia
      Arthropoda
        Hexapoda
               [Apterygota]
            Insecta
              Pterygota
                Neoptera
                       [Endopterygota]
                       [Exopterygota]
                    Plecoptera
                           [Filipalpia]
                           [Holognatha]
                           [Setipalpia]
                      Systellognatha
                            Pteronarcyidae
                              Pteronarcyinae
                                Pteronarcellini
                                     Pteronarcella
                                             Pteronarcella badia
                                                   [Pteronarcella badius]
                                             Pteronarcella regularis
                                Pteronarcyini
                                     Pteronarcys
                                           [Allonarcys]
                                             Pteronarcys biloba
                                                   [Allonarcys biloba]
                                             Pteronarcys californica
                                             Pteronarcys comstocki
                                                   [Allonarcys comstocki]
                                             Pteronarcys dorsata
                                             Pteronarcys pictetii
                                             Pteronarcys princeps
                                             Pteronarcys proteus
                                                   [Allonarcys proteus]
                                             Pteronarcys scotti
                                                   [Allonarcys scotti]