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
                                                                       Metapterygota
                                                                         Neoptera Martynov, 1923
                                                                           Eumetabola
                                                                             Paraneoptera
                                                                               Superorder Condylognatha Börner, 1904
                                                                                 Order Hemiptera Linnaeus, 1758 - true bugs
                                                                                   Heteropterida
                                                                                     Suborder Heteropteraᵀ Latreille, 1810
                                                                                       Infraorder Gerromorpha Popov, 1971
                                                                                         Superfamily Gerroideaᵀ Leach, 1815
                                                                                           Family Hydrometridae (Billberg, 1820)
                                                                                             Subfamily Hydrometrinaeᵀ (Billberg, 1820) Esaki, 1927
                                                                                               Genus Hydrometraᵀ Latreille, 1796
                                                                                                 Hydrometra aemula Drake, 1956
                                                                                                 Hydrometra australis Say, 1832
                                                                                                 Hydrometra barei Hungerford, 1927
                                                                                                 Hydrometra gracilenta Horváth, 1899
                                                                                                 Hydrometra hungerfordi Torre-Bueno, 1926
                                                                                                 Hydrometra lillianis Torre-Bueno, 1926
                                                                                                 Hydrometra martini Kirkaldy, 1900
                                                                                                 Hydrometra stagnorum (C. Linnaeus, 1758)
                                                                                                 Hydrometra wileyae Hungerford, 1923