Central Taxonomic Thesaurus
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  Animalia
      Arthropoda
        Crustacea
            Malacostraca
              Eumalacostraca
                  Eucarida
                    Decapoda
                      Pleocyemata
                        Brachyura
                               [Archaeobrachyura]
                               [Brachyrhyncha]
                               [Cancridea]
                               [Dromiacea]
                               [Oxyrhyncha]
                               [Oxystomata]
                          Dorippoidea
                            Dorippidae
                                     Ethusa
                                             Ethusa abyssicola
                                             Ethusa americana
                                                   [Ethusa mascarone americana]
                                             Ethusa mascarone
                                               Ethusa mascarone hawaiiensis
                                               Ethusa mascarone mascarone
                                             Ethusa microphthalma
                                             Ethusa tenuipes
                                             Ethusa truncata
                                     Ethusina
                                             Ethusina abyssicola
                                             Ethusina gracilipes