Taxon Search
Organism
  Animalia
    Bilateria
     Protostomia
     Ecdysozoa
      Arthropoda
        Hexapoda
            Insecta
              Pterygota
                Palaeoptera
                       [Paleoptera]
                    Ephemeroptera
                      Pisciforma
                            Metretopodidae
                                    Metretopus
                                            Metretopus alter
                                            Metretopus borealis
                                                   [Heptagenia borealis]
                                                   [Metretopus norvegicus]
                                                   [Rhithrogena borealis]
                                    Siphloplecton
                                            Siphloplecton basale
                                                   [Baetis basalis]
                                                   [Heptagenia basalis]
                                                   [Siphloplecton basalis]
                                                   [Siphloplecton flexus]
                                                   [Siphloplecton signatum]
                                                   [Siphlurus flexus]
                                            Siphloplecton brunneum
                                            Siphloplecton costalense
                                            Siphloplecton fuscum
                                            Siphloplecton interlineatum
                                                   [Baetis interlineata]
                                            Siphloplecton simile
                                            Siphloplecton speciosum
                                    Siphlurus
                                            Siphlurus bicolor
                                            Siphlurus femoratus
                                            Siphlurus siccus