Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] 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
                     [crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       [crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         [crown] 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 Heptageniidaeᵀ Needham, 1901
                                                                                 Subfamily Heptageniinaeᵀ Needham, 1901
                                                                                   Genus Heptageniaᵀ Walsh, 1863
                                                                                     01 Heptagenia adaequata McDunnough, 1924
                                                                                     02 Heptagenia culacantha Evans et al., 1985
                                                                                     03 Heptagenia dalecarlica Bengtsson, 1912
                                                                                     04 Heptagenia diabasia Burks, 1946
                                                                                     05 Heptagenia dolosa Traver, 1935
                                                                                     06 Heptagenia elegantula (Eaton, 1885)
                                                                                     07 Heptagenia flavescens (Walsh, 1862)
                                                                                     08 Heptagenia guranica Belov
                                                                                     09 Heptagenia julia Traver, 1933
                                                                                     10 Heptagenia kihada Matsumura
                                                                                     11 Heptagenia kyotoensis Gose
                                                                                     12 Heptagenia manifesta (Eaton, 1885)
                                                                                     13 Heptagenia marginalis Banks, 1910
                                                                                     14 Heptagenia patoka Burks, 1946
                                                                                     15 Heptagenia pulla (Clemens, 1913)
                                                                                     16 Heptagenia solitaria McDunnough, 1924
                                                                                     17 Heptagenia sulphurea (Müller, 1776)
                                                                                     18 Heptagenia townesi Traver, 1935