[Panarthropoda] Nielsen, 1995 - panarthropods
   Arthropoda Siebold, 1848 - arthropods see Phylum Arthropoda Siebold, 1848
     Mandibulata see Subphylum Mandibulata Snodgrass, 1938
       Pancrustacea Zrzavý et al., 1997 see Subphylum Pancrustacea Zrzavý et al., 1997
         Altocrustacea
           Miracrustacea
             Hexapoda - insects see Epiclass Hexapoda Latreille, 1825
               Entognatha see Class Entognatha Hirst & Maulik, 1926
                 Diplura Börner, 1904
                   Japygidae Haliday, 1864 see Family Iapygidae Haliday, 1864
                     1 Genus Metajapyx (Silvestri, 1932)