Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
                     Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                       Infrakingdom Protostomia Grobben, 1908
                                         Superphylum Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake, 1997
                                           Panarthropoda Nielsen, 1995 - panarthropods
                                             Tactopoda Budd, 2001
                                               Phylum Arthropoda Siebold, 1848 - arthropods
                                                 Euarthropoda
                                                   Antennulata
                                                     Subphylum Mandibulata Snodgrass, 1938
                                                       Infraphylum Pancrustacea Zrzavý & Štys, 1997
                                                         Altocrustacea
                                                           Miracrustacea
                                                             Superclass Hexapoda Latreille, 1825
                                                               Cercophora
                                                                 Class Insecta Linnaeus, 1758 - insects
                                                                   Subclass Dicondylia Haeckel, 1866
                                                                     Infraclass Pterygota Lang, 1888
                                                                       Division Ephemeroptera Hyatt & Arms, 1890
                                                                         Order Ephemeropteraᵀ Hyatt & Arms, 1891 - mayflies
                                                                           Suborder Pisciforma
                                                                             Superfamily Heptagenioidea
                                                                               Family Isonychiidae Burks, 1953
                                                                                 Genus Isonychiaᵀ Eaton, 1871
                                                                                   01 Isonychia arida (Say, 1839)
                                                                                   02 Isonychia berneri Kondratieff & Voshell, 1984
                                                                                   03 Isonychia bicolor (Walker, 1853)
                                                                                   04 Isonychia campestris McDunnough, 1931
                                                                                   05 Isonychia diversa Traver, 1934
                                                                                   06 Isonychia georgiae McDunnough, 1931
                                                                                   07 Isonychia hoffmani Kondratieff & Voshell, 1984
                                                                                   08 Isonychia ignota (Walker, 1853)
                                                                                   09 Isonychia intermedia (Eaton, 1885)
                                                                                   10 Isonychia japonica (Ulmer)
                                                                                   11 Isonychia notata Traver, 1932
                                                                                   12 Isonychia obscura Traver, 1932
                                                                                   13 Isonychia rufa McDunnough, 1931
                                                                                   14 Isonychia sayi Burks, 1953
                                                                                   15 Isonychia serrata Traver, 1932
                                                                                   16 Isonychia sicca (Walsh, 1862)
                                                                                   17 Isonychia similis Traver, 1932
                                                                                   18 Isonychia tuscalanensis Berner, 1948
                                                                                   19 Isonychia ussurica Bajkova
                                                                                   20 Isonychia velma Needham, 1932