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Homonyms

IRMNG homonym list - genus level - Initial letter = "I" (439)

Please note, this is a provisional homonyms list from IRMNG on 2019-01-19, and is subject to change. It may include nomina nuda, rejected and otherwise non-current names, plus some published misspellings, in addition to homonyms that have been validly published. A small proportion of duplicate entries awaiting rationalisation may also be included.

Click on any genus name for additional details, as currently available.

Ianthe
     Ianthe Marseul, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Ianthe R.A. Salisbury, 1866 accepted as Hypoxis Linnaeus, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Hypoxidaceae (Family)
     Ianthe Bovallius, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Isopoda incertae sedis (Family)

Iasis
     Iasis Savigny, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)
 Iasis Lahille, 1890 accepted as Soestia Kott, 1998 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)

Iberina
     Iberina Munier-Chalmas, 1902 † · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Iberina Simon, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Hahniidae (Family)

Iberis
     Iberis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Iberis J. Hill, 1756 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Iberocarterus
     Iberocarterus Csiki, 1932 accepted as Eocarterus Stichel, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Iberocarterus Antoine, 1959 accepted as Eocarterus Stichel, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Iberocypris
     Iberocypris Babinot, 1985 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Iberocypris Doadrio, 1980 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Iberodinodes
 Iberodinodes Basilewsky & Grundmann, 1954 accepted as Chlaenius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Iberodinodes Wagner, 1932 accepted as Chlaenius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Iberospongia
     Iberospongia Garcia-Bellido & Rigby, 2004 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Reticulosa (Order) > Protospongiidae (Family)
     Iberospongia García-Bellido, 2002 † accepted as Iberospongia García-Bellido, 2002 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Reticulosa (Order) > Protospongiidae (Family)

Iberozabrus
 Iberozabrus Ganglbauer, 1931 accepted as Zabrus Schellenberg, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Iberozabrus Jeannel, 1942 accepted as Zabrus Schellenberg, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Ibidiomorphum
 Ibidiomorphum Gemminger & Harold, 1873 accepted as Ibidiomorphum Gemminger & Harold, 1873 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Ibidiomorphum Blessig, 1873 accepted as Olenecamptus Chevrolat, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Ibidion
     Ibidion Gory, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Ibidion Audinet-Serville, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Ibidium
 Ibidium Dejean, 1830 accepted as Ibidion Gory, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Ibidium R.A. Salisbury ex J.K. Small, 1913 accepted as Spiranthes L.C. Richard, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Ibis
 Ibis Lacepède, 1799 accepted as Mycteria Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Ciconiidae (Family)
 Ibis Möhring, 1758 accepted as Mycteria Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Ciconiidae (Family)
 Ibis Temminck, 1815 accepted as Plegadis Kaup, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Threskiornithidae (Family)

Icaria
     Icaria Schiner, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)
     Icaria de Saussure, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Icaria Thomson, 1878 accepted as Icarina Alluaud, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Icaria Saunders, 1871 accepted as Icarina Alluaud, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Icaria Macbride, 1929 accepted as Miconia Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Icarus
     Icarus Röber, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Icarus · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pionidae (Family)
 Icarus Forbes, 1844 accepted as Oxynoe Rafinesque, 1814 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sacoglossa (Order) > Oxynoidae (Family)
     Icarus A.L. de Gasper & A. Salino in A.L. de Gasper, V.A. de O. Dittrich, A.R. Smith & A. Salino, 2016 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Blechnaceae (Family)

Icasma
     Icasma Collin, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
     Icasma Turner, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Icelus
     Icelus Koch, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Icelus Krøyer, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Cottidae (Family)

Icharia
 Icharia accepted as Icaria de Saussure, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Icharia Rothschild, 1911 accepted as Ichoria Butler, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)

Ichneugale
     Ichneugale Jourdan, 1852 accepted as Ichneugale Jourdan, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Ichneugale Filhol, 1883 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Ichneumon
     Ichneumon Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Ichneumon Lacepède, 1799 accepted as Ichneumon Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Ichneumon Frisch, 1775 accepted as Herpestes Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Herpestidae (Family)

Ichnium
     Ichnium Sollas, 1900 † · Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)
     Ichnium Pabst, 1896 † · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)

Ichnorhinus
     Ichnorhinus Dejean, 1835 accepted as Ichnorhinus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Ichnorhinus Dejean, 1836 accepted as Ichnorhinus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Ichnusa
     Ichnusa Reuss, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Ichnusa Debrenne & Naud, 1981 † · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Ichnusa Jeffreys, 1847 accepted as Bela Leach, 1847 (name introduced in synonymy, not available) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mangeliidae (Family)

Ichnusella
 Ichnusella Cottarelli, 1971 accepted as Bereraia Huys, 2009 (Preoccupied by Ichnusella, Dieni & Massari, 1966 (Foraminifera)) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Leptopontiidae (Family)
 Ichnusella Dieni & Massari, 1966 † accepted as Trocholina Paalzow, 1922 † (Opinion of Loeblich & Tappan, 1987) · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Involutinida (Order) > Involutinidae (Family)

Ichthidion
 Ichthidion Bolivar, 1884 accepted as Ichthyotettix Rehn, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)
 Ichthidion Haldeman, 1843 accepted as Retocomus Casey, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)

Ichthyaetus
     Ichthyaetus Sweeting in Wood, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Ichthyaetus Kaup, 1829 † · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Longipterygiformes (Order) > Longipterygiformes (awaiting allocation) (Family)
     Ichthyaetus Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Ichthyaëtus
 Ichthyaëtus Agassiz, 1846 accepted as Ichthyaetus Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Ichthyaëtus Sweeting in Wood, 1837 accepted as Ichthyaetus Sweeting in Wood, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Ichthydion
     Ichthydion Dejean, 1834 accepted as Ichthydion Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)
 Ichthydion Saussure, 1859 accepted as Ichthyotettix Rehn, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)
 Ichthydion Melsheimer, 1853 accepted as Retocomus Casey, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)

Ichthydium
     Ichthydium Ehrenberg, 1830 · Animalia (Kingdom) > Gastrotricha (Phylum) > Gastrotricha (awaiting allocation) (Class) > Chaetonotida (Order) > Chaetonotidae (Family)
 Ichthydium Agassiz, 1846 accepted as Ichthydium Agassiz, 1846 (Unjustified (?) emendation) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Ichthydium Ehrenberg, 1831 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Ichthyoborus
     Ichthyoborus Kaup, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Ichthyoborus Boulenger, 1907 accepted as Ichthyborus Günther, 1864 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Distichodontidae (Family)

Ichthyocolla
     Ichthyocolla Geoffroy, 1767 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Ichthyocolla Agassiz, 1846 accepted as Ichthyocolla Agassiz, 1846 (Unjustified (?) emendation) · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Ichthyocolla Garsault, 1764 accepted as Acipenser Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Acipenseriformes (Order) > Acipenseridae (Family)

Ichthyodes
     Ichthyodes Newman, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Ichthyodes Adelung, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Ephemeridae (Family)

Ichthyolithus
     Ichthyolithus Germar in Keferstein, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Ichthyolithus Linnaeus, 1768 accepted as Ichthyolithus Linnaeus, 1768 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Ichthyophaga
 Ichthyophaga Syromjatnikova, 1949 accepted as Piscinquilinus Sluys & Kawakatsu, 2005 (preoccupied) · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Prolecithophora (Order) > Genostomatidae (Family)
     Ichthyophaga Lesson, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
 Ichthyophaga Baker, 1927 accepted as Ichthyophaga Lesson, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Ichthyophis
     Ichthyophis Fitzinger, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Gymnophiona (Order) > Ichthyophiidae (Family)
 Ichthyophis Lesson, 1828 accepted as Scuticaria Jordan & Snyder, 1901 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Muraenidae (Family)

Ichthyopisthen
     Ichthyopisthen Aurivillius, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
     Ichthyopisthen Roelofs, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)

Ichthyosoma
     Ichthyosoma Felder, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Ichthyosoma Montrouzier, 1855 accepted as Thesisternus · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Ichthyoxenus
 Ichthyoxenus auctt. accepted as Ichthyoxenos Herklots, 1870 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Cymothoidae (Family)
 Ichthyoxenus Zimmer in Krumbach & Kükenthal, 1927 accepted as Ichthyoxenus auctt. (later usage) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Cymothoidae (Family)

Icmaleus
 Icmaleus Gistel, 1856 accepted as Hydaticus Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
 Icmaleus Gistel, 1856 accepted as Hydaticus Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Iconella
     Iconella A. Jurilj, 1948 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Bacillariophyceae (awaiting allocation) (Order) > Bacillariophyceae (awaiting allocation) (Family)
     Iconella Mason, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Ictalurus
     Ictalurus Rafinesque, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Ictaluridae (Family)
 Ictalurus accepted as Felis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)

Icterodes
     Icterodes Hampson, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Icterodes Butler, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Icterus
     Icterus Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
 Icterus Griffith in Cuvier, 1827 accepted as Arctictis Temminck, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverridae (Family)

Ictidopsis
     Ictidopsis Broom, 1912 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Ictidopsis Van Hoepen, 1916 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Ictinaetus
     Ictinaetus Blyth, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
     Ictinaetus Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Ictinocephalus
     Ictinocephalus Page, 1859 † accepted as Ictinocephalus Page, 1859 † · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Ictinocephalus Powrie, 1864 † · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Ictinus
     Ictinus Morris in Wood, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Ictinus Laporte, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Ictinus Cassini, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Ictinus Rambur, 1842 accepted as Ictinogomphus Cowley, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Gomphidae (Family)

Ictis
     Ictis Alder & Hancock, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Ictis Schinz, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverridae (Family)
     Ictis Schulze, 1897 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
 Ictis Berthold in Latreille, 1827 accepted as Arctictis Temminck, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverridae (Family)
 Ictis Kaup, 1829 accepted as Mustela Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
 Ictis Candèze, 1863 accepted as Pleonomus Ménétriés, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Ida
     Ida Jay, 1836 accepted as Ida Jay, 1836 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Ida Robineau-Desvoidy, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Ida Gray, 1873 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Chelonia (awaiting allocation) (Family)
     Ida Gray, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lacertilia (awaiting allocation) (Family)

Idacantha
 Idacantha Fairmaire, 1869 accepted as Diacantha Chevrolat, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Idacantha Chapuis, 1875 accepted as Prosmidia Weise, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Idaea
     Idaea Treitschke, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Idaea Oberthür, 1880 accepted as Idea Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Danaidae (Family)

Idaethina
     Idaethina Gemminger & Harold, 1868 accepted as Idaethina Gemminger & Harold, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)
 Idaethina Reitter, 1875 accepted as Australaethina Kirejtshuk & Lawrence, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)

Idalia
     Idalia Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Idalia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lymantriidae (Family)
     Idalia Rafinesque, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Idalia Quatrefages, 1866 accepted as Pista Malmgren, 1866 (subjective synonym) · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
 Idalia Mulsant, 1846 accepted as Adalia Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Idalia Gray, 1847 accepted as Doto Oken, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Dotidae (Family)
 Idalia Leuckart, 1828 accepted as Okenia Menke, 1830 (invalid: junior homonym of Idalia Huebner, [1820]; Okenia and Idalina are replacement names) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Goniodorididae (Family)

Idalina
     Idalina Schlumberger & Munier-Chalmas, 1884 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Hauerinidae (Family)
 Idalina Norman, 1890 accepted as Okenia Menke, 1830 (objective synonym of Okenia) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Goniodorididae (Family)

Idas
     Idas Jeffreys, 1876 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
     Idas Mulsant, 1876 accepted as Idas Mulsant, 1876 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Idatius
     Idatius Fairmaire, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Idatius Distant, 1910 accepted as Sejanus Distant, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Iddingsia
     Iddingsia Walcott, 1924 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Dokimocephalidae (Family)
     Iddingsia Olsson, 1929 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Cerithiidae (Family)

Idechthis
     Idechthis Hübner, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Idechthis Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Idesia
     Idesia Maximowicz, 1866 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Idesia Scopoli, 1777 accepted as Diospyros Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ebenaceae (Family)

Idia
 Idia Hübner, 1809-1813 accepted as Idia Hübner, 1809-1813 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Idia Fieber, 1866 accepted as Idia Fieber, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Idia Lamouroux, 1816 accepted as Idiellana Cotton & Godfrey, 1942 (preoccupied [Lepidoptera]) · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Sertulariidae (Family)
 Idia Wiedemann, 1820 accepted as Stomorhina Rondani, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Idiacanthus
     Idiacanthus Peters, 1877 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Stomiiformes (Order) > Stomiidae (Family)
     Idiacanthus Gunnell, 1933 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Idiella
     Idiella Brauer & Bergenstamm, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhiniidae (Family)
 Idiella Stechow, 1919 accepted as Idiellana Cotton & Godfrey, 1942 (preoccupied ) · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Sertulariidae (Family)

Idiocerus
     Idiocerus Lewis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Idiocerus Curtis, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Idiocheila
 Idiocheila accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)
 Idiocheila Frivaldsky, 1883 accepted as Apatetica Westwood, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Idiochila
 Idiochila Pilsbry, 1921 accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)
 Idiochila Bernhauer & Schubert, 1910 accepted as Apatetica Westwood, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Agyrtidae (Family)

Idiochlora
 Idiochlora Prout, 1912 accepted as Dryochlora Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Idiochlora Warren, 1896 accepted as Dryochlora Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Idiochroa
     Idiochroa Turner, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Idiochroa Turner, 1947 accepted as Idioxantha Common, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Idiodamaeus
     Idiodamaeus Paschoal in Paschoal & Johnston, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)
 Idiodamaeus Paschoal, 1984 accepted as Austrodamaeus Balogh & Mahunka, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Idiodamaeidae (Family)
 Idiodamaeus Paschoal, 1982 accepted as Austrodamaeus Balogh & Mahunka, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Idiodamaeidae (Family)

Idiolorryia
     Idiolorryia André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Idiolorryia André, 1979 accepted as Idiolorryia André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)

Idiomerus
     Idiomerus Melzer, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Idiomerus Dolin in Dolin & Pritykina, 1980 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Idiomerus Imms, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)

Idiomorpha
     Idiomorpha Förster, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Idiomorpha Turner, 1946 accepted as Bakia Koçak, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
 Idiomorpha Croneis & Gale, 1939 † accepted as Idiomorphina Croneis & Gale, 1939 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)

Idiomorphus
     Idiomorphus Dolin in Dolin & Pritykina, 1980 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Idiomorphus Chaudoir, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Idiomorphus Doumet, 1861 accepted as Bicyclus Kirby, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Idioneura
     Idioneura Selys, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Protoneuridae (Family)
     Idioneura Philippi, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Idioneura Felder, 1867 accepted as Idioneurula Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Idiophyllum
     Idiophyllum Cao, 1975 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
     Idiophyllum Lesquereux, 1880 † · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Idiopsis
     Idiopsis Brauer & Bergenstamm, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhiniidae (Family)
 Idiopsis Faust, 1897 accepted as Idiopsodes Thompson, 1977 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Idiopsis Kaszab, 1981 accepted as Kocakia Kaszab, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Idiostolus
     Idiostolus Berg, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Idiostolus Ashmead, 1900 accepted as Idiostolus Ashmead, 1900 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Idiostoma
     Idiostoma Walsingham, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Idiostoma Cameron, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Idiostoma Arrow, 1904 accepted as Allidiostoma Arrow, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hybosoridae (Family)

Idiostyla
     Idiostyla Meyrick, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cosmopterigidae (Family)
     Idiostyla Drake, 1946 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tingidae (Family)

Idiotropus
     Idiotropus Fieber, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Microphysidae (Family)
     Idiotropus Berg, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)

Idiotubus
     Idiotubus Kozlowski, 1938 † accepted as Idiotubus Kozlowski, 1938 † · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Idiotubus Kozlowski, 1948 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Tuboidea (Order) > Tuboidea (awaiting allocation) (Family)

Idiotypa
     Idiotypa Loew, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Richardiidae (Family)
     Idiotypa Förster, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Idiozancla
     Idiozancla Turner, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
 Idiozancla Turner, 1939 accepted as Phobetica Turner, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)

Idolocoris
     Idolocoris Douglas & Scott, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Idolocoris Walker in Richter, 1872 accepted as Haematomyzus Piaget, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Haematomyzidae (Family)

Idolum
     Idolum Pfeiffer, 1856 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Idolum Saussure, 1869 accepted as Idolomantis Uvarov, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Idomene
     Idomene Philippi, 1843 accepted as Idomene Philippi, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Clausidiidae (Family)
 Idomene Philippi, 1843 sensu Sars M., 1906 accepted as Xouthous Thomson G.M., 1883 (synonymy) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Pseudotachidiidae (Family)

Idotaea
 Idotaea Dana, 1849 accepted as Idotea Fabricius, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Idoteidae (Family)
 Idotaea Fabricius, 1796 accepted as Idotea Fabricius, 1798 (misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Idoteidae (Family)

Idotea
     Idotea Fabricius, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Idoteidae (Family)
 Idotea Paetel, 1875 accepted as Idotea Paetel, 1875 (Misspelling) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Aglajidae (Family)
     Idotea Weber, 1795 accepted as · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippidae (Family)

Idothea
     Idothea Kunth, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
     Idothea Fabricius, 1796 accepted as Idothea Fabricius, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Idoteidae (Family)
 Idothea Agassiz, 1846 accepted as Idothea Agassiz, 1846 (Unjustified (?) emendation) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Aglajidae (Family)
 Idothea Fabricius, 1796 accepted as Idotea Fabricius, 1798 (misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Idoteidae (Family)
 Idothea Agassiz, 1846 † accepted as Campylocephalus Eichwald, 1860 † · Animalia (Kingdom) > Arthropoda (Phylum) > Merostomata (Class) > Eurypterida (Order) > Stylonuridae (Family)
 Idothea Schumacher, 1817 accepted as Fimbria Megerle von Mühlfeld, 1811 (objective synonym of Fimbria) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Lucinidae (Family)

Iduna
     Iduna Keyserling & Blasius, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sylviidae (Family)
     Iduna Claparède & Lachmann, 1860 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Iduna Boeck, 1861 accepted as Liljeborgia Spence Bate, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Liljeborgiidae (Family)

Idus
 Idus Heckel in Russegger, 1843 accepted as Leuciscus Cuvier, 1816 (synonym) · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Idus Broun, 1893 accepted as Reyesiella Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Idya
 Idya Fréminville, 1809 accepted as Beroe Gronov, 1760 · Animalia (Kingdom) > Ctenophora (Phylum) > Nuda (Class) > Beroida (Order) > Beroidae (Family)
 Idya Philippi, 1843 accepted as Tisbe Lilljeborg, 1853 (synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Tisbidae (Family)

Idyellopsis
     Idyellopsis Lang, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Idyanthidae (Family)
     Idyellopsis Lang, 1944 represented as Idyellopsis Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Idyanthidae (Family)

Idyia
     Idyia Rafinesque, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Idyia Linnavuori, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Idyia Agassiz, 1846 accepted as Idyia Agassiz, 1846 (Unjustified (?) emendation) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Tisbidae (Family)
     Idyia · Animalia (Kingdom) > Ctenophora (Phylum) > Nuda (Class) > Beroida (Order) > Beroidae (Family)

Idyla
     Idyla Adams, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Idyla Vest, 1867 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Idyopsis
 Idyopsis Sars G.O., 1905 accepted as Idyanthe Sars G.O., 1909 (synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Idyanthidae (Family)
 Idyopsis Agassiz, 1860 accepted as Beroe Gronov, 1760 · Animalia (Kingdom) > Ctenophora (Phylum) > Nuda (Class) > Beroida (Order) > Beroidae (Family)

Ierax
     Ierax Leach, 1816 accepted as Ierax Leach, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Falconidae (Family)
     Ierax Forster, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Falconidae (Family)

Ifasina
     Ifasina Jeannel, 1946 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Ifasina Rivalier, 1961 accepted as Cylindera Westwood, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Iforasia
     Iforasia Fischer, 1962 † accepted as Iforasia Fischer, 1962 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Iforasia Fischer, 1963 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Ignambia
     Ignambia Heller in Sarasin & Roux, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Ignambia Cheesman, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Iguana
     Iguana Laurenti, 1768 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Iguanidae (Family)
 Iguana Gronovius, 1763 accepted as Iguana Laurenti, 1768 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Iguanidae (Family)

Iguanosaurus
     Iguanosaurus Ritgen, 1828 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Iguanosaurus Kuhn, 1944 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Sauria (awaiting allocation) (Family)

Iheringia
     Iheringia Jones, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Iheringia Cossmann, 1899 † accepted as Iheringia Cossmann, 1899 † (Unjustified (?) emendation) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Lahilliidae (Family)
 Iheringia Lahille, 1898 † accepted as Iheringiella Berg, 1898 † (junior homonym of Iheringia Keyserling, 1891 (Arachnida: Palpimandae)) · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Scutellina incertae sedis (Family)
 Iheringia Keyserling, 1891 accepted as Otiothops MacLeay, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Palpimanidae (Family)

Ihlea
     Ihlea Metcalf, 1919 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)
     Ihlea Metcalf, 1918 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)
 Ihlea Travassos & Vogelsang, 1932 accepted as Oesophagostomum Molin, 1861 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Chabertiidae (Family)

Ijimaia
     Ijimaia Gordon & d'Hondt, 1997 · Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Ijimaia Sauter, 1905 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ateleopodiformes (Order) > Ateleopodidae (Family)

Ikonnikovia
     Ikonnikovia I.A. Linczevski in B.K. Schischkin & E.G. Bobrov, 1952 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Plumbaginaceae (Family)
     Ikonnikovia Beï-Bienko, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Ilaenchus
 Ilaenchus Lučnik, 1933 accepted as Chlaenius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Ilaenchus Basilewsky & Grundmann, 1954 accepted as Chlaenius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Ilarches
     Ilarches Meyrick, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Ilarches Cantor, 1849 accepted as Ephippus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Ephippidae (Family)

Ilea
 Ilea E.M. Fries, 1825 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)
 Ilea E.M. Fries, 1835 accepted as Petalonia Derbès & Solier, 1850 (synonym) · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Scytosiphonales (Order) > Scytosiphonaceae (Family)
 Ilea J.Agardh, 1883 accepted as Capsosiphon Gobi, 1879 (synonym) · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Capsosiphonaceae (Family)

Ilema
     Ilema Moore, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lymantriidae (Family)
 Ilema Hampson, 1900 accepted as Ilema Hampson, 1900 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)

Ilerda
     Ilerda Doubleday, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Ilerda Stål, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)

Ilerdaesaurus
     Ilerdaesaurus Hoffstetter, 1966 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Sauria (awaiting allocation) (Family)
     Ilerdaesaurus Hoffstetter, 1965 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Sauria (awaiting allocation) (Family)

Iletica
 Iletica Gemminger & Harold, 1870 accepted as Eletica Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
 Iletica Agassiz, 1846 accepted as Eletica Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)

Ilex
 Ilex P. Miller, 1754 accepted as Quercus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Fagaceae (Family)
     Ilex Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Aquifoliales (Order) > Aquifoliaceae (Family)

Ilia
     Ilia Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
     Ilia Baranov, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Ilia Hartman, 1881 accepted as Ilia Hartman, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Iliella
     Iliella Tchernyshev, 1940 † · Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Kazacharthra (Order) > Ketmeniidae (Family)
     Iliella Rukavishnikova in Nikitin, Popov & Rukavishnikova, 1980 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Cyrtiidae (Family)
     Iliella Bacescu, 1968 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Malacostraca (awaiting allocation) (Order) > Malacostraca (awaiting allocation) (Family)

Iliolopha
     Iliolopha Bonaparte, 1854 accepted as Iliolopha Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Iliolopha Sclater, 1856 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Ilione
     Ilione Haliday in Curtis, 1837 accepted as Ilione Haliday in Curtis, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)
 Ilione Hendel, 1901 accepted as Ilione Haliday in Curtis, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)

Ilisha
     Ilisha Richardson, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Pristigasteridae (Family)
     Ilisha Southwell & Prashad, 1918 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)

Ilisia
 Ilisia Fitzinger, 1826 accepted as Ilisia Fitzinger, 1826 (Misspelling) · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Aniliidae (Family)
     Ilisia Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)

Iliusa
 Iliusa Mulsant & Rey, 1874 accepted as Myrmecopora Saulcy, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Iliusa Mulsant & Rey, 1873 accepted as Myrmecopora Saulcy, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Iljinia
     Iljinia Korovin ex M.M. Iljin in B.K. Schischkin, 1936 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)
 Iljinia de Buen, 1930 accepted as Pomatoschistus Gill, 1863 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)

Illa
     Illa Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
     Illa Warren, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Illa Baranov, 1938 accepted as Solomonilla Özdikmen, 2007 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Illecebrum
     Illecebrum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Illecebrum K.P.J. Sprengel, 1817 accepted as Alternanthera Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Illidgea
     Illidgea Turner, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
 Illidgea Lea, 1912 accepted as Acidinus Zimmerman, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Illiesiella
     Illiesiella Besch, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Sperchontidae (Family)
     Illiesiella Wagner, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)

Illigera
     Illigera Meigen, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Illigera Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Hernandiaceae (Family)

Ilonara
     Ilonara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Ilonara W. Savage & J.M.H. Shaw, 2004 accepted as Ilonara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Ilyanthus
     Ilyanthus Dana, 1846 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Aiptasiidae (Family)
     Ilyanthus Forbes, 1840 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Haloclavidae (Family)

Ilyobates
 Ilyobates Sars, 1866 accepted as Krithe Brady, Crosskey & Robertson, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Krithidae (Family)
     Ilyobates Kraatz, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Ilyobius
     Ilyobius Enderlein, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
 Ilyobius Gemminger & Harold, 1868 accepted as Ilybius Erichson, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
 Ilyobius Agassiz, 1846 accepted as Ilybius Erichson, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Ilyodrilus
     Ilyodrilus Štolc, 1888 · Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Oligochaeta (awaiting allocation) (Order) > Oligochaeta (awaiting allocation) (Family)
     Ilyodrilus Eisen, 1879 · Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Haplotaxida (Order) > Tubificidae (Family)

Ilythea
     Ilythea Haliday, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ephydridae (Family)
     Ilythea Curtis, 1837 accepted as Ilythea Haliday, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ephydridae (Family)

Imania
     Imania V.A. Krassilov & S.A. Schorochova in E.V. Krasnov, 1970 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Pteridospermopsida (awaiting allocation) (Order) > Pteridospermopsida (awaiting allocation) (Family)
     Imania Martynov, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Apataniidae (Family)

Imantocera
     Imantocera Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Imantocera Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Imantophyllum
     Imantophyllum W.J. Hooker, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Imantophyllum W.J. Hooker, 1828 accepted as Imatophyllum W.J. Hooker, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Imatidium
     Imatidium Fabricius, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Imatidium Aslam, 1965 accepted as Aslamidium Borowiec, 1984 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Imbricaria
     Imbricaria Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)
 Imbricaria (J.C.D. Schreber) A. Michaux, 1803 accepted as Anaptychia Körber, 1848 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Physciaceae (Family)
 Imbricaria J.E. Smith, 1797 accepted as Baeckea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
 Imbricaria Commerson ex A.L. Jussieu, 1789 accepted as Mimusops Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)

Imbricatospira
     Imbricatospira Fu, 1982 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Atrypida (Order) > Atrypidae (Family)
     Imbricatospira Fu Lipu, 1985 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)

Imbrius
     Imbrius Stål, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Imbrius Pascoe, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Imelda
     Imelda Dellacasa, Gordon & Dellacasa, 2002 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Imelda Hewitson, 1870 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)

Imeria
     Imeria Cameron, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Imeria R.M. King & H.E. Robinson, 1975 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Imerina
     Imerina Ragonot, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Imerina Lehrer, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
 Imerina Raffray, 1897 accepted as Merinia Newton & Chandler, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Imhofia
 Imhofia Heister, 1755 accepted as Nerine Herbert, 1820 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Imhofia Herbert, 1821 accepted as Hessea W. Herbert, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Imisia
 Imisia Renier, 1804 accepted as Imisia Renier, 1804 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)
 Imisia Brusina, 1870 accepted as Galeomma Turton, 1825 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)

Imitatrix
     Imitatrix Gurevich, 1963 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Imitatrix Westerlund, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Imogine
 Imogine Girard, 1853 accepted as Imogine Marcus & Marcus, 1968 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Stylochidae (Family)
     Imogine Marcus & Marcus, 1968 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Stylochidae (Family)

Imperata
     Imperata Cyrillo, 1792 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Imperata delle Chiaje, 1841 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Imperatoria
     Imperatoria Parona, 1933 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Sphinctozoa (Order) > Sebargasiidae (Family)
     Imperatoria de Gregorio, 1930 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Imperatoria Matthes, 1952 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Creodonta (Order) > Hyaenodontidae (Family)
 Imperatoria Linnaeus, 1753 accepted as Peucedanum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Imperfecta
     Imperfecta Méhelÿ, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Imperfecta Busch, 1948 accepted as Buschiella Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)

Inachus
     Inachus Hisinger, 1837 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Inachus Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Inachidae (Family)

Inactis
 Inactis (M. Gomont) O. Kirchner in Engler & Prantl, 1898 accepted as Schizothrix Kützing ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Oscillatoriaceae (Family)
 Inactis Thuret, 1875 accepted as Schizothrix Kützing ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Schizotrichaceae (Family)
 Inactis Kützing, 1843 accepted as Schizothrix Kützing ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Schizotrichaceae (Family)

Inapertisporites
     Inapertisporites T. van der Hammen, 1954 † accepted as Inapertisporites T. van der Hammen ex G.E. Rouse, 1959 † · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Sporae dispersae (Family)
 Inapertisporites T. van der Hammen ex G.E. Rouse, 1959 † accepted as · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Sporae dispersae (Family)

Inca
     Inca Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Inca Jardine, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Inca Warren, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Inca Taczanowski, 1879 accepted as Aspidolasius Simon, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
 Inca Klapálek, 1914 accepted as Inconeuria Klapálek, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)
 Inca Klapálek, 1916 accepted as Inconeuria Klapálek, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)

Incisocalliope
     Incisocalliope Brandt, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Pleustidae (Family)
     Incisocalliope J.L. Barnard & Reish, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Pleustidae (Family)

Incudifera
     Incudifera Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Incudifera Wehrli, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Indanobium
 Indanobium Español, 1965 accepted as Ptilinomorphus Español, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Indanobium Español, 1970 accepted as Ptilinomorphus Español, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Indiana
 Indiana Matthew, 1902 † accepted as Indianites Ulrich & Bassler, 1931 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Archaeocopida (Order) > Indianidae (Family)
 Indiana Tutt, 1903 accepted as Indiana Tutt, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Indiana Chakravatz, 1943 accepted as Indiana Chakravatz, 1943 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Travassosinematidae (Family)

Indiaster
     Indiaster Raghavendra Rao, 1957 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Asteroidea (awaiting allocation) (Order) > Asteroidea (awaiting allocation) (Family)
 Indiaster Lambert, 1920 accepted as Brisaster Gray, 1855 (subjective junior synonym) · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Schizasteridae (Family)

Indicator
     Indicator Stephens in Shaw, 1815 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Indicatoridae (Family)
     Indicator Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Indiella
     Indiella Sautya, Tabachnick & Ingole, 2011 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Aulocalycidae (Family)
 Indiella Brumpt, 1906 accepted as Madurella M.E. Brumpt, 1905 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariales (Order) > Sordariales incertae sedis (Family)
 Indiella Blattný, 1925 accepted as Sognorus Reitter, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Indiochaitophorus
     Indiochaitophorus Verma, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Indiochaitophorus Verma & Das in Verma & Das, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Indirana
     Indirana Bauer, 1985 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Ranidae (Family)
     Indirana Laurent, 1986 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Ranidae (Family)

Indoceras
     Indoceras Noetling, 1897 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Sphenodiscidae (Family)
 Indoceras Schlüter, 1928 † accepted as Idoceras Burckhardt, 1906 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Perisphinctidae (Family)

Indoleon
     Indoleon Banks, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Indoleon Fraser, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Indoquedius
     Indoquedius Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Indoquedius Cameron, 1932 accepted as Indoquedius Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Indoseius
 Indoseius Evans, 1955 accepted as Neocypholaelaps Vitzthum, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Ameroseiidae (Family)
 Indoseius Ghai & Menon, 1970 accepted as Indoseiulus Ehara, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)

Indosinia
     Indosinia Cossmann, 1920 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Coenogastropoda incertae sedis (Order) > Acteoninidae (Family)
     Indosinia J.E. Vidal, 1965 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Ochnaceae (Family)

Indosphaera
     Indosphaera A. Kumar, 1986 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Peridiniaceae (Family)
     Indosphaera Attems, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Myriapoda (awaiting allocation) (Class) > Myriapoda (awaiting allocation) (Order) > Myriapoda (awaiting allocation) (Family)
     Indosphaera Attems, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Myriapoda (awaiting allocation) (Class) > Myriapoda (awaiting allocation) (Order) > Myriapoda (awaiting allocation) (Family)
 Indosphaera Jankowski, 1985 accepted as Epistylis Ehrenberg, 1830 (junior homonym and synonym) · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Peritrichida (Order) > Epistylididae (Family)

Indosyrphus
     Indosyrphus Kohli, Kapoor & Gupta, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Indosyrphus Kohli, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Indotheca
     Indotheca R.V. Sitholey in B. Sahni & R.V. Sitholey, 1943 † · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
 Indotheca Stach, 1956 accepted as Sphaeridia Linnaniemi, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Symphypleona (Order) > Sminthurididae (Family)

Indotherium
     Indotherium Yadagiri, 1984 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Multituberculata (Order) > Woutersiidae (Family)
 Indotherium Kretzoi, 1942 † accepted as Brachypotherium Roger, 1904 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)

Indris
 Indris Cuvier, 1800 accepted as Indri Geoffroy, 1796 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Indriidae (Family)
 Indris Ashmead, 1887 accepted as Idris Förster, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)

Indumasonaphis
     Indumasonaphis · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Indumasonaphis Ghosh, Basu & Raychaudhuri, 1977 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Indusa
 Indusa Handlirsch, 1907 † accepted as Indusa Handlirsch, 1907 † (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)
 Indusa Richardson, 1905 accepted as Ichthyoxenus auctt. · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Cymothoidae (Family)

Indusius
     Indusius Gunnell, Gingerich, Ul-Haq, Bloch, Khan & Clyde, 2008 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Anaptomorphidae (Family)
     Indusius Barraud, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Inella
     Inella Bayle, 1879 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)
     Inella Repina in Repina et al., 1964 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Redlichiida (Order) > Neoredlichiidae (Family)

Inermia
     Inermia Korobkov, 1955 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Inermia Poey, 1860 accepted as Haemulon Cuvier, 1829 (synonym) · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Haemulidae (Family)

Inermodorus
 Inermodorus Gaud & Mouchet, 1959 accepted as Inermodorsus Gaud & Mouchet, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Syringobiidae (Family)
 Inermodorus Zoological Record, 1961 accepted as Inermodorsus Gaud & Mouchet, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Syringobiidae (Family)

Inezia
     Inezia Cherrie, 1909 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Inezia E.P. Phillips, 1932 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Inezia Roewer, 1913 accepted as Santinezia Roewer, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Cranaidae (Family)

Inferiolabiata
     Inferiolabiata Broch, 1951 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Stylasteridae (Family)
 Inferiolabiata Cairns, 1983 accepted as Inferiolabiata Broch, 1951 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Stylasteridae (Family)

Inflatulum
     Inflatulum Carpenter, 1857 accepted as Inflatulum Carpenter, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Inflatulum Carpenter, 1858 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Infundibulum
     Infundibulum Sowerby, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Infundibulum Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Trochidae (Family)
 Infundibulum Velenovský, 1934 accepted as Peziza Dillenius ex E.M. Fries, 1822 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Pezizaceae (Family)

Inga
     Inga Busck, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
     Inga P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Ingenhoussia
 Ingenhoussia Dennstedt, 1818 accepted as Ingenhoussia Dennstedt, 1818 (Not validly published) · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Vitales (Order) > Vitaceae (Family)
     Ingenhoussia E.H.F. Meyer, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Ingenia
     Ingenia Gerlach, 1957 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripyloidida (Order) > Tripyloididae (Family)
     Ingenia Barsbold, 1981 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Saurischia (Order) > Oviraptoridae (Family)

Iniopachys
 Iniopachys Lacordaire, 1854 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Iniopachys Géhin, 1885 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Inistius
 Inistius accepted as Isistius Gill, 1865 (misspelling) · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Squaliformes (Order) > Dalatiidae (Family)
 Inistius accepted as Iniistius Gill, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)

Inmalthodes
 Inmalthodes Wittmer, 1940 accepted as Inmalthodes Wittmer, 1940 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Inmalthodes Pic, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)

Ino
     Ino Leach in Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Ino Schrank, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Ino Koch, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Ino Hinds, 1843 accepted as Inella Bayle, 1879 (invalid: junior homonym of Ino Schrank, 1803 [Crustacea]; Inella is a replacement name) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)
 Ino Laporte, 1835 accepted as Inopeplus Smith, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Salpingidae (Family)

Inoceramus
     Inoceramus J. Sowerby, 1814 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Inoceramidae (Family)
 Inoceramus Parkinson, 1819 † accepted as Inoceramus J. Sowerby, 1814 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Inoceramidae (Family)

Inoderma
     Inoderma Kützing, 1833 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Tetrasporales (Order) > Palmellaceae (Family)
 Inoderma M.J. Berkeley, 1881 accepted as Mesophellia M.J. Berkeley, 1857 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Hysterangiales (Order) > Mesophelliaceae (Family)
 Inoderma P.A. Karsten, 1879 accepted as Inonotus P.A. Karsten, 1879 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Hymenochaetales (Order) > Hymenochaetaceae (Family)
 Inoderma (Acharius) S.F. Gray, 1821 accepted as Thrombium Wallroth, 1831 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Thrombiaceae (Family)

Inodes
 Inodes O.F. Cook, 1901 accepted as Sabal Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
 Inodes de Laubenfels, 1957 accepted as Hyrtios Duchassaing & Michelotti, 1864 (junior synonym) · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Dictyoceratida (Order) > Thorectidae (Family)

Inosomus
     Inosomus Broun, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Inosomus Hutton, 1904 accepted as Inosomus Broun, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Insidiator
 Insidiator Amyot, 1846 accepted as Insidiator Amyot, 1846 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Insidiator Jordan & Snyder, 1900 accepted as Suggrundus Whitley, 1930 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Platycephalidae (Family)

Insignia
     Insignia Astrova, 1965 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cryptostomata (Order) > Cryptostomata (awaiting allocation) (Family)
     Insignia Angelov, 1972 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)

Insula
     Insula Kunkel, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Hyalidae (Family)
     Insula Zhou & Li, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Insulahypnus
     Insulahypnus Stibick, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Insulahypnus Stibick, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Insulanus
     Insulanus Fleutiaux, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)
     Insulanus Linnavuori, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Insulanus Sublette, 1967 † accepted as Xestochironomus Sublette & Wirth, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Insulodrilus
     Insulodrilus Brinkhurst, 1991 · Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Haplotaxida (Order) > Phreodrilidae (Family)
     Insulodrilus Brinkhurst, 1966 · Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Oligochaeta (awaiting allocation) (Order) > Oligochaeta (awaiting allocation) (Family)

Integraster
 Integraster Lambert & Thiéry, 1924 accepted as Holanthus Lambert & Thiéry, 1924 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Hemiasteridae (Family)
 Integraster Döderlein, 1920 accepted as Luidia Forbes, 1839 (synonym (formerly subgenus of Luidia)) · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Platyasterida (Order) > Luidiidae (Family)

Intermedia
 Intermedia Caziot, 1910 accepted as Intermedia Caziot, 1910 (Misspelling) · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Intermedia Chao, 1992 accepted as Sphenometopa Townsend, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Intermediana
     Intermediana Germain, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Intermediana Locard, 1890 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Intermediopsyllus
     Intermediopsyllus Kunz, 1962 accepted as Scottopsyllus Apostolov & Marinov, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Paramesochridae (Family)
 Intermediopsyllus Huys, 2009 accepted as Scottopsyllus Apostolov & Marinov, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Paramesochridae (Family)

Inti
     Inti M.A. Blanco, 2007 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Inti Hansson, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Intrasporeocoelia
     Intrasporeocoelia Fan & Zhang, 1985 † · Animalia (Kingdom) > Porifera (Phylum) > Calcarea (Class) > Permosphincta (Order) > Permosphincta (awaiting allocation) (Family)
     Intrasporeocoelia Fan Jiasong & Zhang Wei, 1986 † · Animalia (Kingdom) > Porifera (Phylum) > Calcarea (Class) > Calcarea (awaiting allocation) (Order) > Calcarea (awaiting allocation) (Family)

Intybellia
     Intybellia Cassini, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Intybellia A. Monnier, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Intybus
 Intybus E.M. Fries, 1828 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Intybus Zinn, 1757 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Investigator
     Investigator Stewart, 1909 · Animalia (Kingdom) > Priapula (Phylum) > Priapula (awaiting allocation) (Class) > Priapulida incertae sedis (Order) > Priapulida incertae sedis (Family)
 Investigator Goode in Goode & Bean, 1896 accepted as Nemichthys Richardson, 1848 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Nemichthyidae (Family)

Io
     Io Lea, 1831 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Pleuroceridae (Family)
     Io B. Nordenstam, 2003 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Io Blanchard in Gay, 1852 accepted as Adetomeris Michener, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Saturniidae (Family)

Ioanella
     Ioanella B. Granier & P.Y. Berthou in I.I. Bucur & S. Filipescu, 2002 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladales (awaiting allocation) (Family)
     Ioanella Saidova, 1975 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Eponididae (Family)

Iodes
     Iodes Blume, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)
     Iodes Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Iodes Leach, 1847 accepted as Iodes Leach, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Iodes Mörch, 1860 accepted as Janthina Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Janthinidae (Family)

Iodina
 Iodina Mörch, 1860 accepted as Janthina Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Janthinidae (Family)
 Iodina Miers, 1851 accepted as Jodina W.J. Hooker & Arnott ex C.F. Meisner, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Santalaceae (Family)

Iole
     Iole Blyth, 1844 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pycnonotidae (Family)
 Iole A. Adams, 1860 † accepted as Iolaea A. Adams, 1867 (Invalid: junior homonym of Iole Blyth, 1844; Iolaea and Iolina are replacement names) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Iole Richardson, 1905 accepted as Tole Ortmann, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janiridae (Family)
 Iole Pascoe, 1858 accepted as Serixia Pascoe, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Iolina
     Iolina Pritchard, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Iolinidae (Family)
 Iolina Baily, 1948 † accepted as Iolaea A. Adams, 1867 (Invalid: unnecessary replacement name for Iolaea, by Baily treated as a junior homonym of Iolea Pascoe, 1858) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Ione
 Ione Lindley, 1853 accepted as Sunipia J. Lindley, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Ione Latreille, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Ionidae (Family)

Ionia
     Ionia Perestenko, 1996 · Plantae (Kingdom) > Rhodophyta (Phylum) > Rhodophyta incertae sedis (Class) > Cryptonemiales (Order) > Kallymeniaceae (Family)
     Ionia Ball, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Ionopsis
 Ionopsis Lutz, 1909 accepted as Ionopsis Lutz, 1909 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)
     Ionopsis Kunth in Humboldt, Bonpland & Kunth, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Ionumnia
     Ionumnia J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Ionumnia J.M.H. Shaw, 2004 accepted as Ionumnia J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Iophon
     Iophon Gray, 1867 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Acarnidae (Family)
 Iophon Champion, 1895 accepted as Jophon Champion, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Iospilus
     Iospilus Viguier, 1886 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Iospilidae (Family)
 Iospilus Augener, 1922 accepted as Iospilus Viguier, 1886 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Iospilidae (Family)

Iota
     Iota Saussure, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Iota Cobb, 1913 accepted as Hemicriconemoides Chitwood & Birchfield, 1957 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Criconematidae (Family)

Iotaraia
     Iotaraia Jordan, 1925 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Iotaraia Leigh-Sharpe, 1924 accepted as Raja Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Rajiformes (Order) > Rajidae (Family)

Iotomia
 Iotomia Casey, 1922 accepted as Coelonertus Solari, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Iotomia Lioy, 1863 accepted as Potamia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)

Iotonchus
     Iotonchus Cobb, 1916 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)
     Iotonchus Andrássy, 1958 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)

Iouea
 Iouea sensu Lévi & Lévi, 1988 accepted as Neoschrammeniella Pisera & Lévi in Hooper & Van Soest, 2002 (misidentification) · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Corallistidae (Family)
 Iouea de Laubenfels in Moore, 1955 accepted as Schrammeniella Briestroffer, 1949 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Corallistidae (Family)

Ipana
     Ipana Walker, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Ipana Jordan, 1896 accepted as Ipanica Hampson, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Iphiclus
     Iphiclus Chevrolat, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Iphiclus Dejean, 1835 accepted as Iphiclus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Iphiculus
     Iphiculus Adams & White, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Iphiculidae (Family)
     Iphiculus White, 1847 accepted as Iphiculus Adams & White, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Iphiculidae (Family)

Iphidea
 Iphidea Billings, 1872 † accepted as Paterina Beecher, 1891 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Paterinata (Class) > Paterinida (Order) > Paterinidae (Family)
 Iphidea Baly, 1865 accepted as Atrachya Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Iphidella
 Iphidella Walcott, 1912 † accepted as Dictyonina Cooper, 1942 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Paterinata (Class) > Paterinida (Order) > Paterinidae (Family)
 Iphidella Walcott, 1905 † accepted as Paterina Beecher, 1891 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Paterinata (Class) > Paterinida (Order) > Paterinidae (Family)

Iphidulus
     Iphidulus Berlese, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)
     Iphidulus Ribaga, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)

Iphigeneia
 Iphigeneia Sars, 1896 accepted as Iphigenella G.O. Sars, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Iphigenellidae (Family)
 Iphigeneia Thomson, 1882 accepted as Iphinotus Stebbing, 1899 (homonym, Mollusca) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Phliantidae (Family)

Iphigenia
     Iphigenia Kunth, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Colchicaceae (Family)
     Iphigenia Thomson, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Iphigenia Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Donacidae (Family)
 Iphigenia Gray in Turton, 1840 accepted as Iphigenia Gray in Turton, 1840 (Misspelling) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
 Iphigenia O. G. Costa, 1850 accepted as Spinosipella Iredale, 1930 (Invalid: junior homonym of Iphigenia Schumacher, 1817) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Verticordiidae (Family)

Iphimedia
     Iphimedia Rathke, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Iphimediidae (Family)
 Iphimedia Duchassaing in A. Milne-Edwards, 1866 accepted as Platyactaea Guinot, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)

Iphimediopsis
     Iphimediopsis Della Valle, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Iphimediopsis Schellenberg, 1931 accepted as Iphimedia Rathke, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Iphimediidae (Family)

Iphinoe
     Iphinoe Spaeth, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Iphinoe Bate, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Cumacea (Order) > Bodotriidae (Family)
 Iphinoe Rafinesque, 1815 accepted as Uroctea Dufour, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oecobiidae (Family)
 Iphinoe H. Adams & A. Adams, 1856 accepted as Neoiphinoe Habe, 1978 (non Rafinesque, 1815) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Capulidae (Family)

Iphinoë
 Iphinoë Spaeth, 1898 accepted as Aspidimorpha Hope, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Iphinoë Bate, 1856 accepted as Iphinoe Bate, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Cumacea (Order) > Bodotriidae (Family)
     Iphinoë V.Lamprinou & A.Pantazidou, 2011 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Symphyonemataceae (Family)

Iphionyx
 Iphionyx Krøyer, 1845 accepted as Candacia Dana, 1846 (synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Candaciidae (Family)
 Iphionyx Dana, 1852 accepted as Candacia Dana, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Candaciidae (Family)

Iphipus
     Iphipus Schoenherr, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Iphipus Schönherr, 1833 accepted as Iphipus Schoenherr, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Iphis
 Iphis Meigen, 1800 accepted as Iphis Meigen, 1800 (Published in a suppressed work (ICZN)) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Iphis Koch, 1835 accepted as Hyletastes Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
 Iphis Laporte, 1836 accepted as Abiphis Fleutiaux, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Iphis Koch, 1839 accepted as Eviphis Berlese, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Eviphididae (Family)
 Iphis Leach, 1817 accepted as Arcania Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)

Iphisa
     Iphisa Rafinesque, 1815 accepted as Iphisa Rafinesque, 1815 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Iphisa Gray, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)

Iphiseius
     Iphiseius Berlese, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)
     Iphiseius Berlese, 1916 accepted as Iphiseius Berlese, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)

Iphition
     Iphition Audouin, 1836 · Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Iphition Pomel, 1872 † accepted as Iphiteon Bowerbank, 1869 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Euretidae (Family)

Iphitus
     Iphitus Rafinesque, 1815 accepted as Iphitus Rafinesque, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Iphitus Jeffreys, 1883 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Nystiellidae (Family)

Iphius
     Iphius Dejean, 1834 accepted as Iphius Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Iphius Schönherr, 1823 accepted as Alceis Billberg, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Iphthinus
     Iphthinus Melsheimer, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Iphthinus Dejean, 1834 accepted as Iphthinus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Ipiranga
     Ipiranga Fennah, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Ipiranga Muñoz-Cuevas, 1973 accepted as Uropachylus Mello-Leitão, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Ipo
     Ipo Kirkaldy, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Ipo Persoon, 1807 accepted as Antiaris Leschenault, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Moraceae (Family)

Ipocerus
     Ipocerus Baker, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Jassidae (Family)
 Ipocerus Evans, 1934 accepted as Bakeriana Evans, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Ipoctonus
     Ipoctonus Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Ipoctonus Heine, 1860 accepted as Dendropicos Malherbe, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Picidae (Family)

Ips
     Ips Fabricius, 1777 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Ips de Geer, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Iquitosa
     Iquitosa Fennah, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
 Iquitosa Roewer, 1943 accepted as Phalangodus Gervais, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Cranaidae (Family)

Ira
     Ira Walker, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Ira Neumoegen, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Syntomidae (Family)

Iracema
     Iracema Triques, 1996 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gymnotiformes (Order) > Rhamphichthyidae (Family)
 Iracema Pérez-Miles, 2000 accepted as Maraca Pérez-Miles, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theraphosidae (Family)

Iranella
     Iranella Uvarov, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Dericorythidae (Family)
     Iranella Hupé, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Iranella Hupé in Piveteau, 1953 † accepted as Iranella Hupé in Piveteau, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Irania
     Irania Pandey & Fürsich, 2003 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Scleractinia (awaiting allocation) (Family)
     Irania de Filippi, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
 Irania Douvillé in Morgan, 1904 † accepted as Morgania Cossmann, 1906 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Irania King, 1937 † accepted as Iranoleesia King, 1955 † (junior homonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Asaphiscidae (Family)
 Irania E. Hadač & J. Chrtek, 1973 accepted as Fibigia Medikus, 1792 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Irania H.-J. Schweitzer, 1977 † accepted as Schweitzeria A.B. Shipunov & D.D. Sokoloff, 2003 † (junior homonym) · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Czekanowskiales (Order) > Czekanowskiaceae (Family)

Iranites
     Iranites Teichert & Kummel in Teichert, Kummel & Sweet, 1973 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Xenodiscidae (Family)
 Iranites Rahaghi, 1976 † accepted as Sirtina Brönnimann & Wirz, 1962 † (Opinion of Loeblich & Tappan, 1987) · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Lepidorbitoididae (Family)

Iraniulus
     Iraniulus Lohmander, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Myriapoda (awaiting allocation) (Class) > Myriapoda (awaiting allocation) (Order) > Myriapoda (awaiting allocation) (Family)
     Iraniulus Attems, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Myriapoda (awaiting allocation) (Class) > Myriapoda (awaiting allocation) (Order) > Myriapoda (awaiting allocation) (Family)

Irenaeus
     Irenaeus Agassiz, 1845 accepted as Irenaeus Agassiz, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Irenaeus Goodsir, 1843 accepted as Anomalocera Templeton, 1837 (synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Pontellidae (Family)
 Irenaeus Latreille, 1829 accepted as Piestus Gravenhorst, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Irene
     Irene (Theissen & Sydow) Ciferri, 1938 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
 Irene Boie, 1826 accepted as Irena Horsfield, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Irenidae (Family)
 Irene Theissen & P. Sydow, 1917 accepted as Asteridiella D. McAlpine, 1897 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
 Irene Haeckel, 1879 accepted as Eirene Eschscholtz, 1829 (incorrect spelling of Eirene) · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Eirenidae (Family)

Irenea
     Irenea Donisthorpe, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Irenea D.L. Szlachetko, J. Mytnik-Ejsmont, M. Górniak & A. Romowicz, 2006 accepted as Cyrtochilum Kunth in Humboldt, Bonpland & Kunth, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Irenella
     Irenella Riley, 1927 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Irenella Gude, 1913 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Irenella Suessenguth, 1934 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Irenina
     Irenina (F. Stevens) Ciferri, 1938 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
 Irenina F.L. Stevens, 1927 accepted as Appendiculella F. von Höhnel, 1919 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)

Irenopsis
     Irenopsis F.L. Stevens, 1927 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
     Irenopsis (F. Stevens) Ciferri, 1938 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
 Irenopsis Götte, 1886 accepted as Eirene Eschscholtz, 1829 (synonym) · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Eirenidae (Family)

Iresia
     Iresia Dejean, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Iresia Dejean in Dejean & Boisduval, 1829 accepted as Iresia Dejean, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Iria
     Iria Stål, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Iria (Persoon) Hedwig, 1806 accepted as Fimbristylis M. Vahl, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Iridea
     Iridea Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Iridea Bory de St.-Vincent, 1826 accepted as Iridea Bory de St.-Vincent, 1826 (Misspelling) · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Gigartinaceae (Family)
 Iridea Stackhouse, 1816 accepted as Desmarestia J.V.F. Lamouroux, 1813 (synonym) · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Desmarestiales (Order) > Desmarestiaceae (Family)

Iridipitta
     Iridipitta Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Iridipitta Bonaparte, 1854 accepted as Iridipitta Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Iridopsis
     Iridopsis Warren, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Iridopsis Aurivillius, 1899 accepted as Iridana Aurivillius in Seitz, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Iridotaenia
     Iridotaenia Deyrolle, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Iridotaenia Pongracz, 1935 accepted as Iridotaenia Pongracz, 1935 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Iris
     Iris Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
     Iris Saussure, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)
     Iris Staudinger, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Irma
 Irma Grube, 1878 accepted as Oxydromus Grube, 1855 (subjective synonym) · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Hesionidae (Family)
 Irma de Gregorio, 1930 † accepted as Leptodus Kayser in Richthofen, 1883 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Lyttoniidae (Family)

Iron
     Iron P. Browne, 1756 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Ochnaceae (Family)
     Iron Eaton, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Heptageniidae (Family)

Irona
     Irona Mabille, 1883 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Irona Schiödte & Meinert, 1884 accepted as Mothocya Costa in Hope, 1851 (junior synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Cymothoidae (Family)
 Irona Finlay, 1926 accepted as Irus F. C. Schmidt, 1818 (Invalid: junior homonym of Irona Mabille, 1883 [Gastropoda]; Notirus is a replacement name) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Ironella
     Ironella Krasnov & Starostina, 1970 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Scleractinia (awaiting allocation) (Family)
     Ironella Cobb, 1920 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Ironida (Order) > Ironidae (Family)

Irus
     Irus F. C. Schmidt, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
     Irus Oken, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Irus Lowe, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Irvingella
     Irvingella Rusconi, 1948 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Komaspididae (Family)
     Irvingella Walcott, 1924 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Irvingella Van Tieghem, 1905 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Irvingiaceae (Family)

Irvingia
     Irvingia J.D. Hooker, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Irvingiaceae (Family)
 Irvingia F. von Mueller, 1865 accepted as Polyscias J.R. Forster & J.G.A. Forster, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Araliaceae (Family)

Irwinia
     Irwinia G.M. Barroso, 1980 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Irwinia Cortes, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Isabelia
     Isabelia Barbosa Rodrigues, 1877 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Isabelia J.K. Lentin & G.L. Williams, 1975 † accepted as Isabelidinium J.K. Lentin & G.L. Williams, 1977 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Peridiniaceae (Family)

Isacantha
     Isacantha Hope, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isacantha Simon, 1864 accepted as Isoxya Simon, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)

Isacis
 Isacis Cope, 1873 † accepted as Isacis Cope, 1873 † (Misspelling) · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Isacis Diesing, 1861 accepted as Pristionchus Kreis, 1932 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)

Isadelphus
     Isadelphus Semenov, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chrysididae (Family)
     Isadelphus Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Isaea
     Isaea Milne Edwards, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Isaeidae (Family)
 Isaea Agassiz, 1846 accepted as Isaea Agassiz, 1846 (Unjustified (?) emendation) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Callianideidae (Family)
     Isaea Conrad, 1871 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Isandra
     Isandra R.A. Salisbury, 1866 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Isandra F. von Mueller, 1883 accepted as Symonanthus L. Haegi, 1981 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)

Isandria
     Isandria Heinrich, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Isandria Warren, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Isanthus
     Isanthus Carlgren, 1938 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Isanthidae (Family)
 Isanthus A. Michaux, 1803 accepted as Trichostema Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Isapis
     Isapis Doubleday, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Isapis H. Adams & A. Adams, 1854 accepted as Iselica Dall, 1918 (Invalid: junior homonym of Isapis Doubleday, 1847 [Lepidoptera]; Iselica is a replacement name) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Amathinidae (Family)

Isarthron
     Isarthron Dejean, 1835 accepted as Isarthron Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Isarthron Redtenbacher, 1845 accepted as Tetropium Kirby in Richardson, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Isaster
     Isaster Desor, 1858 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Micrasteridae (Family)
 Isaster Verrill, 1894 accepted as Mediaster Stimpson, 1857 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Goniasteridae (Family)

Isatis
     Isatis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Isatis Trouessart, 1885 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Isaura
     Isaura Dana, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Isaura Commerson ex Poiret in Lamarck, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Isaura Joly, 1841 accepted as Cyzicus Audouin, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Diplostraca (Order) > Cyzicidae (Family)
 Isaura Agassiz, 1844 accepted as Isaurus Gray, 1828 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Zoantharia (Order) > Zoanthidae (Family)

Isauria
     Isauria Ragonot, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Isauria Kobelt in Rossmaessler, 1901 accepted as Isaurica Kobelt in Rossmaessler, 1901 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)

Iscadida
     Iscadida Chevrolat, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Iscadida Dejean, 1835 accepted as Iscadida Chevrolat, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Ischiochaetus
     Ischiochaetus Bickel & Dyte, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Ischiochaetus Parent, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Ischiopachys
     Ischiopachys Lacordaire, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Ischiopachys Dejean, 1835 accepted as Ischiopachys Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Ischiopachys Chevrolat, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Ischius
     Ischius Wesmael, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Ischius Candèze, 1857 accepted as Pyrischius Hyslop, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Ischnanthus
 Ischnanthus (Engler) Van Tieghem, 1895 accepted as Englerina Van Tieghem, 1895 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
 Ischnanthus J.J. Roemer & J.A. Schultes, 1817 accepted as Ichnanthus Palisot de Beauvois, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Ischnaspis
     Ischnaspis Douglas, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
 Ischnaspis Simon, 1892 accepted as Ischnothyreus Simon, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oonopidae (Family)

Ischnia
     Ischnia Jordan, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Ischnia Alph. de Candolle ex Meisner, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)

Ischnobrotus
     Ischnobrotus Aurivillius, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Ischnobrotus Hustache, 1936 accepted as Ischnobrotus Aurivillius, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Ischnocerus
 Ischnocerus Dejean, 1836 accepted as Meconemus Labram & Imhoff, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Ischnocerus Schoenherr, 1840 accepted as Aulacoderes Chevrolat, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Ischnocerus Schönherr, 1839 accepted as Meconemus Labram & Imhoff, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
     Ischnocerus Dejean, 1834 accepted as Meconemus Labram & Imhoff, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Ischnocnemis
     Ischnocnemis Thomson, 1864 accepted as Ischnocnemis Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Ischnocnemis LeConte, 1873 accepted as Sphaenothecus Dupont, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Ischnocoris
     Ischnocoris Bode, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Ischnocoris Fieber, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Ischnodactylus
     Ischnodactylus Chevrolat, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Ischnodactylus Cossmann, 1889 † accepted as Araeodactylus Harris & Burrows, 1891 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Ischnodactylus Pelseneer, 1886 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Ctenochelidae (Family)

Ischnogaster
     Ischnogaster Kriechbaumer, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Ischnogaster Guérin-Ménéville in Duperry, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)

Ischnoglossa
     Ischnoglossa Kraatz, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Ischnoglossa Saussure, 1860 accepted as Leptonycteris Lydekker in Flower & Lydekker, 1891 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Ischnognathus
     Ischnognathus Duméril & Bibron, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Ischnognathus Stovall, 1948 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Creodonta (Order) > Hyaenodontidae (Family)

Ischnolepis
     Ischnolepis H. Jumelle & H. Perrier de la Bâthie, 1909 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Ischnolepis Haughton, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Ischnomerus
     Ischnomerus Labram & Imhoff, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Ischnomerus Schönherr, 1840 accepted as Aulacoderes Chevrolat, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Ischnomerus Schönherr, 1842 accepted as Meconemus Labram & Imhoff, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Ischnophanes
     Ischnophanes Meyrick, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Coleophoridae (Family)
 Ischnophanes Turner, 1936 accepted as Ischnomorpha Turner, 1937 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Ischnopoda
     Ischnopoda Stephens, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Ischnopoda Blackwelder, 1952 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Ischnopoda Grandidier, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Ischnopsis
     Ischnopsis Ashmead, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eupelmidae (Family)
     Ischnopsis Walsingham, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Coleophoridae (Family)

Ischnoptera
     Ischnoptera Burmeister, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattellidae (Family)
 Ischnoptera Fox, 1917 accepted as Parcoblatta Hebard, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattellidae (Family)
 Ischnoptera Turner, 1941 accepted as Elaphromorpha Turner, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
 Ischnoptera Brunner, 1891 accepted as Phanischnoptera Kirby, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Ischnoptera Béthoux & Nel, 2004 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Archaeorthoptera incertae sedis (Order) > Archaeorthoptera incertae sedis (Family)

Ischnopteryx
     Ischnopteryx Enderlein, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Psocoptera (awaiting allocation) (Family)
 Ischnopteryx Agassiz, 1846 accepted as Ischnopteris Hübner, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Ischnopus
     Ischnopus Marshall in Mantero, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Ischnopus Kriechbaumer, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Ischnopus Amyot, 1846 accepted as Ischnopus Amyot, 1846 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Ischnopus Faust, 1894 accepted as Clarkanthus Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Ischnoradsia
     Ischnoradsia Dall, 1879 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Ischnoradsia Shuttleworth, 1853 accepted as Ischnochiton Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Ischnochitonidae (Family)

Ischnoscelis
     Ischnoscelis Reuter, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Ischnoscelis Burmeister, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Ischnoscelis Agassiz, 1845 accepted as Geranospiza Kaup, 1847 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Ischnosoma
     Ischnosoma Wallengren, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Ischnosoma Stephens, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Ischnosoma Stephens, 1829 accepted as Ischnosoma Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Ischnosoma Agassiz in Spix & Agassiz, 1829 accepted as Osteoglossum Cuvier, 1829 (synonym) · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osteoglossiformes (Order) > Osteoglossidae (Family)
 Ischnosoma G.O. Sars, 1866 accepted as Ischnomesus Richardson, 1908 (junior homonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Ischnomesidae (Family)

Ischnurus
 Ischnurus Koch, 1837 accepted as Liocheles Sundevall, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Liochelidae (Family)
 Ischnurus I.B. Balfour, 1883 accepted as Lepturus R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Ischyrodon
     Ischyrodon Müller Hal., 1875 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Fabroniaceae (Family)
     Ischyrodon Merian, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Ischyrosonyx
     Ischyrosonyx Dejean, 1835 accepted as Ischyrosonyx Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Ischyrosonyx Sturm, 1843 accepted as Eurypedus Gistl, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Ischyrus
     Ischyrus Faldermann, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Ischyrus sensu Crotch, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
     Ischyrus Dejean, 1835 accepted as Ischyrus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Ishpella
     Ishpella Petrunina, 1990 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Ishpella Petrunina in Petrunina, Sennikov, Ermikov, Zeifert, Krivchikov & Puzyrev, 1984 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Isia
     Isia Walker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)
     Isia D.L. Hawksworth & C. Manoharachary, 1978 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariomycetes incertae sedis (Order) > Sordariomycetes incertae sedis (Family)

Isias
     Isias De Notaris, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Isias Boeck, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Centropagidae (Family)

Ismarus
     Ismarus Haliday, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Ismarus Haag-Rutenberg, 1878 accepted as Simarus Borchmann, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Ismaya
     Ismaya Colless, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhinophoridae (Family)
     Ismaya Boucek, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Ismene
     Ismene R.A. Salisbury ex Herbert, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
     Ismene Swainson, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
     Ismene Nickerl, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)
     Ismene Stephens, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Yponomeutidae (Family)
     Ismene Bogachev, 1936 † · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Ismene Savigny, 1816 accepted as Bibasis Moore, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Ismenia
     Ismenia King, 1850 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Dallinidae (Family)
     Ismenia Robineau-Desvoidy, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Ismenia Pruvot, 1891 accepted as Ichthyomenia Pilsbry in Tryon & Pilsbry, 1898 (invalid: junior homonym of Ismenia King, 1850 [Brachiopoda] and Ismenia Robineau-Desvoidy, 1863 [Diptera]; Ichtyomenia is a replacement name) · Animalia (Kingdom) > Mollusca (Phylum) > Aplacophora (Class) > Pholidoskepia (Order) > Dondersiidae (Family)

Isnardia
     Isnardia Borrello, 1967 † · Animalia (Kingdom) > Trace fossils (awaiting allocation) (Phylum) > Trace fossils (awaiting allocation) (Class) > Trace fossils (awaiting allocation) (Order) > Trace fossils (awaiting allocation) (Family)
 Isnardia Linnaeus, 1753 accepted as Ludwigia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Onagraceae (Family)

Isocardia
     Isocardia Barrande, 1881 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Praecardioida (Order) > Antipleuridae (Family)
 Isocardia Lamarck, 1799 accepted as Glossus Poli, 1795 (synonym) · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Glossidae (Family)

Isocardium
     Isocardium Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Isocardium Froriep, 1806 accepted as Glossus Poli, 1795 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Glossidae (Family)

Isocarpha
     Isocarpha R. Brown, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Isocarpha Lessing, 1830 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Isocasnonia
     Isocasnonia Csiki, 1932 accepted as Isocasnonia Csiki, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Isocasnonia Liebke, 1938 accepted as Colliuris de Geer, 1774 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Isocerus
     Isocerus Illiger, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Isocerus Dejean, 1821 accepted as Isocerus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Isocerus Laporte in Brullé, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Isocerus Latreille, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Isochaeta
 Isochaeta Pointner, 1911 accepted as Isochaetides Hrabĕ, 1966 · Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Haplotaxida (Order) > Tubificidae (Family)
 Isochaeta Giesbrecht, 1889 accepted as Lucicutia Giesbrecht, 1898 (suppressed by ICZN, see Case 2666) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Lucicutiidae (Family)

Isochirus
     Isochirus Desmarest, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Isochirus Reitter, 1892 accepted as Turanella Semenov, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Isocladus
     Isocladus Miers, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Sphaeromatidae (Family)
     Isocladus S.O. Lindberg, 1862 · Plantae (Kingdom) > Bryophyta (Phylum) > Sphagnopsida (Class) > Sphagnales (Order) > Sphagnaceae (Family)

Isocolus
     Isocolus Förster, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Isocolus Zittel, 1885 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphida (awaiting allocation) (Family)

Isocordia
     Isocordia Bruguière, 1792 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Isocordia Sacco, 1901 accepted as Glossus Poli, 1795 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Glossidae (Family)

Isocrinites
     Isocrinites Meyer, 1835 accepted as Isocrinites Meyer, 1835 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Isocrinites Phillips, 1841 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Isocrinus
     Isocrinus von Meyer in Agassiz, 1836 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Isocrinida (Order) > Isocrinidae (Family)
     Isocrinus Phillips, 1841 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Isocrinus Meyer, 1835 accepted as Isocrinus von Meyer in Agassiz, 1836 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Isocrinida (Order) > Isocrinidae (Family)

Isocyclidium
     Isocyclidium Esteban, Finlay & Embley, 1993 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Cyclidiidae (Family)
     Isocyclidium Esteban, Finlay & Embley, 1993 accepted as Isocyclidium Esteban, Finlay & Embley, 1993 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Cyclidiidae (Family)

Isodactylus
     Isodactylus Gray, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Isodactylus Dal Piaz, 1927 † accepted as Isodactylella Strand, 1943 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Isodactylus Hedges, Duellman & Heinicke, 2008 accepted as Hypodactylus Hedges, Duellman & Heinicke, 2008 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Craugastoridae (Family)

Isodictya
     Isodictya Bowerbank, 1864 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Isodictyidae (Family)
     Isodictya Bowerbank in MacAndrew, 1861 accepted as Isodictya Bowerbank, 1864 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Isodictyidae (Family)

Isodon
     Isodon Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Isodon (Schrader ex Bentham) Spach, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Isodon Douvillé, 1912 † accepted as Isodon Douvillé, 1912 † (Unjustified (?) emendation) · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Isodon Say, 1822 accepted as Isoodon Geoffroy in Desmarest, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Peramelidae (Family)
 Isodon Agassiz, 1846 accepted as Isoodon Geoffroy in Desmarest, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Peramelidae (Family)

Isodonta
     Isodonta Buvignier, 1851 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Isodonta Cameron, 1910 accepted as Isodontia Patton, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)

Isodontiaphila
 Isodontiaphila Bohart, 1941 accepted as Isodontiaphila Bohart, 1941 (Misspelling) · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Isodontiaphila Pierce, 1918 accepted as Paraxenos Saunders, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Stylopidae (Family)

Isodus
     Isodus Heckel in Russegger, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Isodus M'Coy, 1848 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Isoentomon
     Isoentomon Nosek, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Protura (Class) > Eosentomata (Order) > Eosentomidae (Family)
     Isoentomon Tuxen, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Protura (Class) > Eosentomata (Order) > Eosentomidae (Family)
     Isoentomon Nosek, 1975 accepted as Isoentomon Nosek, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Protura (Class) > Eosentomata (Order) > Eosentomidae (Family)

Isoetopsis
 Isoetopsis Saporta, 1888 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Lycopodiopsida (Class) > Isoetales (Order) > Isoetaceae (Family)
     Isoetopsis Turczaninow, 1851 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Isoglossa
     Isoglossa Coquillett, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Isoglossa Oersted, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Isoglossa Casey, 1893 accepted as Rheobioma Casey, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Isognathus
 Isognathus Kolbe, 1888 accepted as Bolbocranius Kolbe, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
     Isognathus Felder, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)

Isognomon
     Isognomon Lightfoot, 1786 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pteriidae (Family)
 Isognomon Link, 1807 accepted as Isognomon Lightfoot, 1786 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pteriidae (Family)

Isogramma
     Isogramma Meek & Worthen, 1873 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Articulata (awaiting allocation) (Family)
     Isogramma King, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Isogramma Rothschild & Jordan, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)

Isolampas
     Isolampas Lambert in Chautard, 1905 † accepted as Isolampas Lambert in Chautard, 1905 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Isolampas Lambert, 1906 † accepted as Echinolampas Gray, 1825 (subjective junior synonym) · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Cassiduloida (Order) > Echinolampadidae (Family)

Isoleda
     Isoleda Ryckholt, 1854 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
 Isoleda Rollier, 1923 † accepted as Rollieria Cossmann, 1920 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Nuculoida (Order) > Nuculoida (awaiting allocation) (Family)

Isoloba
     Isoloba Warren, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Isoloba Rafinesque, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lentibulariaceae (Family)

Isoloma
 Isoloma Decaisne, 1848 accepted as Kohleria Regel, 1847 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Isoloma J. Smith, 1841 accepted as Lindsaea Dryander ex Smith, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Lindsaeaceae (Family)

Isolus
     Isolus Rafinesque, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Isolus Rafinesque, 1814 accepted as Isolus Rafinesque, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Isomera
     Isomera Robineau-Desvoidy, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Isomera Fairmaire, 1866 accepted as Isomira Mulsant, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Isomeria
     Isomeria Albers, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
     Isomeria Chevallier · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > (Order) > Bacillariophyceae incertae sedis (Family)

Isomerinthus
     Isomerinthus Desmarest in Vaillant, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isomerinthus Schoenherr, 1842 accepted as Sphaeropterus Guérin-Ménéville in Duperry, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Isomeris
     Isomeris Townes, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Isomeris Nuttall in J. Torrey & A. Gray, 1838 accepted as Cleome Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Cleomaceae (Family)

Isomerus
     Isomerus Gistl, 1834 accepted as Isomerus Gistl, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Isomerus Motschoulsky, 1860 accepted as Terminasiania Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Isomita
     Isomita K.M. Diesing, 1848 · Protozoa (Kingdom) > (Phylum) > (Class) > Sarcomastigota (awaiting allocation) (Order) > Flagellata (awaiting allocation) (Family)
     Isomita T. Cavalier-Smith · Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > (Family)

Isomma
     Isomma Selys, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Gomphidae (Family)
     Isomma Jordan, 1927 † · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Isomyllocerus
 Isomyllocerus Voss, 1937 accepted as Myllocerus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isomyllocerus Marshall, 1954 accepted as Myllocerus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Isonema
     Isonema Meek & Worthen, 1865 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda incertae sedis (Order) > Anomphalidae (Family)
     Isonema R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Isonema Cassini, 1817 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Isonema F.L. Schuster, S. Goldstein & B. Hershenov, 1968 · Protozoa (Kingdom) > Euglenozoa (Phylum) > Diplonemea (Class) > Diplonemida (Order) > Diplonemidae (Family)
 Isonema Maas, 1906 accepted as Arctapodema Dall, 1907 (preoccupied by mollusc genus) · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Trachylina (Order) > Rhopalonematidae (Family)
 Isonema Hall, 1891 accepted as Littorina Férussac, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)

Isonotus
     Isonotus Dahlbom, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Isonotus Houlbert, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
     Isonotus Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Isonotus Perty, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Isonotus Guignot, 1936 accepted as Hydaticus Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Isopetalum
     Isopetalum Lambert, 1911 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Spatangoida (awaiting allocation) (Family)
 Isopetalum (A.P. de Candolle) Ecklon & Zeyher, 1835 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Geraniaceae (Family)
 Isopetalum Sweet, 1822 accepted as Pelargonium L'Héritier ex W. Aiton, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Geraniaceae (Family)

Isophyllum
 Isophyllum Spach, 1836 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)
     Isophyllum G.F. Hoffmann, 1814 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Isoplastus
     Isoplastus Skuse, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Isoplastus Horn, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)

Isoplata
     Isoplata Förster, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Isoplata Girault, 1913 accepted as Gastrancistrus Westwood, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Isopleurus
     Isopleurus Meek, 1864 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Isopleurus Kirby in Richardson, 1837 accepted as Amara Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Isopogon
     Isopogon R. Brown ex J. Knight, 1809 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
     Isopogon Loew, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Isoptera
     Isoptera · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Isoptera (Order) > (Family)
 Isoptera Okamura, 1901 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Rhodomelaceae (Family)
 Isoptera Scheffer ex Burck, 1887 accepted as Shorea Roxburgh ex C.F. Gaertner, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Dipterocarpaceae (Family)

Isopteron
     Isopteron Hope, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Isopteron Horn, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Isopteryx
     Isopteryx Klotzsch, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Begoniaceae (Family)
     Isopteryx Guenée, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Isopteryx Pictet, 1841 accepted as Chloroperla Newman, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Chloroperlidae (Family)

Isopus
     Isopus Montrouzier, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Isopus Faust, 1898 accepted as Homoeopus Berg, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isopus Taczanowski, 1872 accepted as Tapinillus Simon, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oxyopidae (Family)

Isopyrum
     Isopyrum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)
 Isopyrum Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)

Isora
     Isora Mulsant, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Isora P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Isorhynchus
     Isorhynchus Schönherr, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isorhynchus King, 1850 † accepted as Equirostra Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Pentamerida (Order) > Porambonitidae (Family)

Isorrhinus
 Isorrhinus Gemminger & Harold, 1871 accepted as Isorhinus Capiomont, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isorrhinus Champion, 1902 accepted as Isorhinus Capiomont, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Isosaphanus
     Isosaphanus Hintz, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Isosaphanus Lepesme & Breuning, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Isosoma
 Isosoma Ménétriés, 1832 accepted as Phyllocerus Lepeletier & Serville, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Plastoceridae (Family)
 Isosoma M. Svrcek, 1989 accepted as Cudoniella P.A. Saccardo, 1889 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiaceae (Family)
 Isosoma Walker, 1832 accepted as Tetramesa Walker, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eurytomidae (Family)
 Isosoma Billberg, 1820 accepted as Oides Weber, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Isotarsus
 Isotarsus LaFerté-Sénectère, 1851 accepted as Craspedophorus Hope, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Isotarsus Chaudoir, 1878 accepted as Psecadius Alluaud, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Isothea
     Isothea E.M. Fries, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Phyllachorales (Order) > Phyllachoraceae (Family)
     Isothea Scudder, 1893 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Attelabidae (Family)

Isotima
     Isotima Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Isotima Brunner von Wattenwyl, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Isotoma
     Isotoma Bourlet, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Isotomidae (Family)
     Isotoma Dejean, 1834 accepted as Isotoma Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Isotoma (R. Brown) J. Lindley, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
 Isotoma Blanchard, 1845 accepted as Isocera Borchmann, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Isotomiella
     Isotomiella Bagnall, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Isotomidae (Family)
     Isotomiella Deharveng & Fjellberg, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Isotomidae (Family)

Isozoanthus
     Isozoanthus Carlgren in Nordgaard, 1905 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Zoantharia (Order) > Parazoanthidae (Family)
     Isozoanthus Carlgren in Chun, 1903 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Zoantharia (Order) > Parazoanthidae (Family)

Ispida
     Ispida Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Ispida Möhring, 1758 accepted as Ispida Möhring, 1758 (Published in a rejected work (ICZN)) · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Issa
     Issa Walker, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Issa Bergh, 1881 accepted as Colga Bergh, 1880 (Unnecessary substitute name for Colga and junior homonym of Issa Walker, 1867; Issena is a replacement name) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Polyceridae (Family)

Issedonia
     Issedonia Popov in Nazarov & Popov, 1980 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Linguliporida (Order) > Torynelasmatidae (Family)
     Issedonia Emelyanov, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Delphacidae (Family)

Isselia
     Isselia Bourguignat, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Isselia S. Squinabol, 1891 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
 Isselia Semper in Schmeltz, 1874 accepted as Stosicia Brusina, 1870 (nomen nudum) · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoinidae (Family)

Isshikia
     Isshikia Shiraki, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)
     Isshikia Chûjô, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Issikia
     Issikia Chûko, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Issikia Zoological Record, 1961 accepted as Isshikia Chûjô, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Issina
     Issina Melichar, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)
 Issina Jousseaume, 1898 accepted as Thecodonta A. Adams, 1864 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)

Issites
     Issites Ljaschenko, 1980 † · Animalia (Kingdom) > Mollusca (Phylum) > Tentaculita (Class) > Volynitida (Order) > Turmalitidae (Family)
     Issites Haupt, 1956 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Isthmia
     Isthmia C.Agardh, 1832 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Centrales (Order) > Biddulphiaceae (Family)
     Isthmia Walker, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tettigometridae (Family)
     Isthmia Gray, 1821 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Isthmia Ehrenberg, 1854 † · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Isthmiella
     Isthmiella Cleve, 1873 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Bacillariophyceae (awaiting allocation) (Order) > Bacillariophyceae (awaiting allocation) (Family)
     Isthmiella Darker, 1967 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Rhytismatales (Order) > Rhytismataceae (Family)

Istiophorus
     Istiophorus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)
 Istiophorus Gray, 1825 accepted as Trachops Gray, 1847 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Isurus
     Isurus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Lamniformes (Order) > Lamnidae (Family)
 Isurus Agassiz, 1844 † accepted as Isurichthys Woodward, 1901 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Perciformes (awaiting allocation) (Family)
     Isurus Agassiz, 1836 † accepted as Isurichthys Woodward, 1901 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Perciformes (awaiting allocation) (Family)

Isus
     Isus Champion, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Isus Bleeker, 1859 accepted as Leuciscus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Italoptygmatis
     Italoptygmatis Akopyan, 1973 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Italoptygmatis Akopyan, 1976 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Heterostrophia (awaiting allocation) (Family)

Itamus
     Itamus Schmidt-Goebel, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Itamus Loew, 1849 accepted as Paritamus Verrall, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Itamus Raffray, 1904 accepted as Raffrayolus Jacobson, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Itamus Förster, 1868 accepted as Uchidella Townes, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Itanus
     Itanus Doubleday in Doubleday & Westwood, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Itanus Felder, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Itatiaya
     Itatiaya Bechyně, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Itatiaya Mello-Leitão, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Ctenidae (Family)
     Itatiaya Schmidt, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)
 Itatiaya Roewer, 1928 accepted as Acutisoma Roewer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Itea
     Itea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Iteaceae (Family)
     Itea Koch, 1838 accepted as Itea Koch, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Trichoniscidae (Family)

Ithagenes
     Ithagenes Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Ithagenes Agassiz, 1846 accepted as Ithaginis Wagler, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Galliformes (Order) > Phasianidae (Family)

Ithone
     Ithone Newman, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Ithonidae (Family)
 Ithone Solsky, 1872 accepted as Aiolocaria Crotch, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Ithyphallus
     Ithyphallus Harold, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Ithyphallus S.F. Gray, 1821 accepted as Mutinus E.M. Fries, 1849 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Phallales (Order) > Phallaceae (Family)

Ithyporus
     Ithyporus Schönherr, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Ithyporus Dejean, 1835 accepted as Ithyporus Schönherr, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Itia
     Itia Marwick, 1931 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitromorphidae (Family)
     Itia Molina, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)

Itieria
     Itieria Matheron, 1842 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Heterostrophia (awaiting allocation) (Family)
     Itieria G. Saporta, 1872 † · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Ituna
     Ituna Doubleday in Doubleday & Westwood, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Danaidae (Family)
 Ituna Walker, 1854 accepted as Tuina Butler, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)

Itylos
     Itylos Draudt in Seitz, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Itylos Nabakov, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Itys
     Itys Wagler, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Itys Nicéville, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Itys Cambridge, 1894 accepted as Grammonota Emerton, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Iulus
     Iulus Wollaston, 1878 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Discidae (Family)
     Iulus R.A. Salisbury, 1866 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Iulus accepted as Julus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)

Iungia
 Iungia Linnaeus f., 1782 accepted as Iungia Linnaeus f., 1782 (Misspelling) · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Iungia Boehmer in Ludwig, 1760 accepted as Iungia Boehmer in Ludwig, 1760 (Misspelling) · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Iva
 Iva Fabricius, 1759 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Iva Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Iva Lubbock, 1853 accepted as Pontella Dana, 1846 (synonym) · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Pontellidae (Family)

Ivanantonia
     Ivanantonia Shevyreva, 1989 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ivanantoniidae (Family)
     Ivanantonia Shevyreva, 1983 † accepted as Ivanantonia Shevyreva, 1983 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ivanantoniidae (Family)
     Ivanantonia Shevyreva in Badamgarav & Reshetov, 1985 † accepted as Ivanantonia Shevyreva in Badamgarav & Reshetov, 1985 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ivanantoniidae (Family)

Ivania
     Ivania Lewis, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)
     Ivania O.E. Schulz, 1933 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Ivania Zittel, 1895 † accepted as Baylea Koninck, 1883 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Gosseletinidae (Family)

Ivanovia
     Ivanovia I.V. Khvorova, 1946 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Bryopsidales (Order) > Codiaceae (Family)
     Ivanovia Dobrolyubova, 1935 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Petalaxidae (Family)

Ivanoviella
     Ivanoviella Makridin, 1955 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Rhynchonellidae (Family)
     Ivanoviella Abushik et al., 1960 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Ivanoviella Ivanova, 1960 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Ivesia
     Ivesia Torrey & A. Gray, 1858 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Ivesia Petrunkevitch, 1925 accepted as Nesticus Thorell, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Nesticidae (Family)
 Ivesia Boynton & Ford, 1995 † accepted as Ivesheadia Boynton & Ford, 1996 † · Animalia (Kingdom) > Orthonectida (Phylum) > Orthonectida (unallocated) (Class) > Heterocyemida (Order) > Conocyemidae (Family)

Ivshiniellus
     Ivshiniellus Korobov, 1966 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Ivshiniellus Korobov, 1966 † accepted as Ivshiniellus Korobov, 1966 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Iwanagara
 Iwanagara R.A. Rolfe, 1896 accepted as Iwanagaara R.A. Rolfe, 1896 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Iwanagara Hort., 1960 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Iwayaspis
     Iwayaspis Kobayashi, 1960 † accepted as Iwayaspis Kobayashi, 1960 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Iwayaspis Kobayashi, 1962 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Ixalus
     Ixalus Ogilby, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Ixalus Koch in Koch (Keyserling), 1873 accepted as Ixamatus Simon, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Nemesiidae (Family)
 Ixalus Duméril & Bibron, 1841 accepted as Philautus Gistl, 1848 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)
 Ixalus Gistl, 1848 accepted as Platynotus Fabricius, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Ixia
     Ixia Kerzhner, 1972 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Ixia Linnaeus, 1762 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Ixia Linnaeus, 1753 accepted as Ixia Linnaeus, 1753 (nomen rejiciendum) · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Ixias
     Ixias Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
 Ixias Sainte-Claire Deville, 1924 accepted as Ixapion Roudier & Tempère, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Ixion
     Ixion Alderslade, 2001 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Alcyonacea (Order) > Xeniidae (Family)
     Ixion Reitter, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Ixion Paul'son, 1875 accepted as Cyphocarcinus A. Milne-Edwards, 1868 (name pre-occupied by Ixion Reitter, 1873 [Coleoptera]) · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)

Ixobiodes
     Ixobiodes Fonseca, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Ixobiodes Zoological Record accepted as Ixobioides Fonseca, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Ixodorhynchidae (Family)

Ixodes
 Ixodes Blyth, 1846 accepted as Ixodes Blyth, 1846 (Misspelling) · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Ixodes Latreille, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Ixodida (Order) > Ixodidae (Family)

Ixodia
     Ixodia Blyth, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Ixodia R. Brown ex W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Ixus
 Ixus Ehrenberg, 1833 accepted as Ixos Temminck in Temminck & Laugier, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pycnonotidae (Family)
     Ixus Dejean, 1821 accepted as Hypera Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)