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 Furcatergalia Kluge, 1998
                                                                             Infraorder Pannota McCafferty & Edmunds, 1979 - pannote mayflies
                                                                               Superfamily Caenoidea Newman, 1853
                                                                                 Family Caenidaeᵀ Newman, 1853
                                                                                   Subfamily Caeninaeᵀ Newman, 1853
                                                                                     Genus Caenisᵀ Stephens, 1835
                                                                                       Subgenus Caenis (Caenis)ᵀ Stephens, 1835
                                                                                       01 Caenis amica Hagen, 1861
                                                                                       02 Caenis anceps Traver, 1935
                                                                                       03 Caenis bajaensis Allen & Murvosh, 1983
                                                                                       04 Caenis candida Harper & Harper, 1981
                                                                                       05 Caenis diminuta Walker, 1853
                                                                                       06 Caenis hilaris (Say, 1839)
                                                                                       07 Caenis horaria (C. Linnaeus, 1758)
                                                                                       08 Caenis latipennis Banks, 1907
                                                                                       09 Caenis macafferti Provonsha, 1990
                                                                                       10 Caenis punctata McDunnough, 1931
                                                                                       11 Caenis tardata McDunnough, 1931
                                                                                       12 Caenis youngi Roemhild, 1984