Central Taxonomic Thesaurus

Taxon Search
  Animalia
      Arthropoda
            Insecta
                    Diptera
                            Syrphidae
                              Syrphinae
                                Bacchini
                                     Platycheirus
                                             Platycheirus lethaeus
                                Syrphini
                                     Syrphus
                                             Syrphus willistoni