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  Animalia
      Arthropoda
        Hexapoda
               [Apterygota]
            Insecta
              Pterygota
                Neoptera
                       [Endopterygota]
                       [Exopterygota]
                    Plecoptera
                           [Filipalpia]
                           [Holognatha]
                           [Setipalpia]
                      Euholognatha
                            Leuctridae
                              Leuctrinae
                                     Calileuctra
                                             Calileuctra dobryi
                                             Calileuctra ephemera
                                     Despaxia
                                             Despaxia augusta
                                                   [Leuctra angusta]
                                                   [Leuctra glabra]
                                     Leuctra
                                             Leuctra alabama
                                             Leuctra alexanderi
                                             Leuctra alta
                                             Leuctra baddecka
                                             Leuctra biloba
                                             Leuctra carolinensis
                                             Leuctra cottaquilla
                                             Leuctra crossi
                                             Leuctra duplicata
                                             Leuctra ferruginea
                                                   [Leuctra decepta]
                                             Leuctra fusca
                                             Leuctra grandis
                                             Leuctra inermis
                                             Leuctra laura
                                             Leuctra maria
                                                   [Leuctra martia]
                                             Leuctra mitchellensis
                                             Leuctra moha
                                             Leuctra monticola
                                             Leuctra moselyi
                                             Leuctra nephophila
                                             Leuctra paleo
                                             Leuctra rickeri
                                             Leuctra sibleyi
                                             Leuctra szczytkoi
                                             Leuctra tenella
                                             Leuctra tenuis
                                             Leuctra triloba
                                             Leuctra truncata
                                             Leuctra variabilis
                                     Moselia
                                             Moselia infuscata
                                                   [Leuctra infuscata]
                                     Paraleuctra
                                             Paraleuctra divisa
                                             Paraleuctra forcipata
                                                   [Leuctra forcipata]
                                             Paraleuctra jewetti
                                             Paraleuctra occidentalis
                                                   [Leuctra bradleyi]
                                                   [Leuctra occidentalis]
                                                   [Leuctra projecta]
                                             Paraleuctra projecta
                                                   [Paraleuctra rickeri]
                                             Paraleuctra sara
                                                   [Leuctra sara]
                                             Paraleuctra vershina
                                     Perlomyia
                                           [Perlomia]
                                             Perlomyia collaris
                                                   [Perlomia collaris]
                                                   [Perlomyia sobrina]
                                                   [Perlomyia solitaria]
                                             Perlomyia utahensis
                                                   [Perlomia utahensis]
                                     Pomoleuctra
                                             Pomoleuctra andersoni
                                                   [Paraleuctra andersoni]
                                             Pomoleuctra purcellana
                                                   [Paraleuctra purcellana]
                                     Zealeuctra
                                             Zealeuctra arnoldi
                                             Zealeuctra cherokee
                                             Zealeuctra claasseni
                                                   [Leuctra claasseni]
                                             Zealeuctra fraxina
                                             Zealeuctra hitei
                                             Zealeuctra narfi
                                             Zealeuctra wachita
                                                   [Zealeuctra washita]
                                             Zealeuctra warreni
                              Megaleuctrinae
                                     Megaleuctra
                                             Megaleuctra complicata
                                             Megaleuctra flinti
                                             Megaleuctra kincaidi
                                             Megaleuctra sierra
                                             Megaleuctra stigmata
                                             Megaleuctra williamsae