Lepidoptera
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- u-aureum (Guenée, 1852) Syngrapha Noctuidae
- ubaldus (Stoll, 1782) Azanus Lycaenidae
- ubenica Thurau, 1903 Henotesia Nymphalidae
- uberalis (Swinhoe, 1885) Candiope Pyralidae
- ucalegon Hewitson, 1865 Papilio Papilionidae
- ucalegon simoni Aurivillius, 1898 Papilio Papilionidae
- ucalegon ucalegonides Staudinger, 1884 Papilio Papilionidae
- uddmanniana (Linnaeus, 1758) Epiblema Tortricidae
- uganda Aurivillius, 1895 Euphaedra Nymphalidae
- uhleri (Reakirt, 1866) Oeneis Nymphalidae
- uhleri varuna (Edwards, 1894) Oeneis Nymphalidae
- uigurica Puplesis, 1985 Stigmella Nepticulidae
- ukrainica (Piskonov, 1971) Filatima Gelechiidae
- ula Karsch, 1895 Deudorix Lycaenidae
- ulaula Dyar, 1927 Natada Limacodidae
- ulceratalis Lederer, 1858 Cornifrons Pyralidae
- ulema (Hewitson, 1850) Corades Nymphalidae
- ulicis (Staudinger, 1859) Pseudenargia Noctuidae
- ulicitella (Stainton, 1849) Agonopterix Depressariidae
- uliginosella Glitz, 1872 Coleophora Coleophoridae
- uliginosella Zeller, 1850 Crambus Pyralidae
- uliginosnalis (Stephens, 1834) Udea Pyralidae
- ulmana (Hübner, 1823) Olindia Tortricidae
- ulmariae (Wocke, 1879) Stigmella Nepticulidae
- ulmella Knaggs, 1867 Scoparia Pyralidae
- ulmella Zeller, 1848 Bucculatrix Bucculatricidae
- ulmi (Denis & Schiffermüller, 1775) Dicranura Notodontidae
- ulmifoliella (Hübner, 1817) Phyllonorycter Gracillariidae
- ulmiphaga (Preissecker, 1942) Stigmella Nepticulidae
- ulmivora (Fologne, 1860) Stigmella Nepticulidae
- ulmivora (Graeser, 1888) Illiberis Zygaenidae
- ulrici (Corti & Draudt, 1933) Ochropleura Noctuidae
- ultima Holst, 1965 Hydraecia Noctuidae
- ultima Puplesis, 1984 Stigmella Nepticulidae
- ultimana (Krulikovsky, 1909) Prochoreutis Choreutidae
- ultimaria (Boisduval, 1840) Eupithecia Geometridae
- ultimaria opisthographata Dietze, 1900 Eupithecia Geometridae
- ultimella Stainton, 1849 Depressaria Depressariidae
- ultronia (Hübner, 1823) Catocala Noctuidae
- ulula (Borkhausen, 1790) Dyspessa Cossidae
- ulula infuscata Staudinger, 1892 Dyspessa Cossidae
- ululana Rössler, 1866 Depressaria Depressariidae
- ulysses Linnaeus, 1758 Papilio Papilionidae
- ulysses ambiguus Rothschild, 1895 Papilio Papilionidae
- ulysses autolyces Felder, 1864 Papilio Papilionidae
- ulysses dirce Jordan, 1909 Papilio Papilionidae
- ulysses joesa Butler, 1869 Papilio Papilionidae
- ulysses oxyartes Fruhstorfer, 1909 Papilio Papilionidae
- ulysses telegonus Felder, 1860 Papilio Papilionidae
- ulysses telemachus Montrouzier 1856 Papilio Papilionidae
- ulyxes (Plötz, 1879) Jemadia Hesperiidae
- umbelaria (Hübner, 1813) Scopula Geometridae
- umbelaria Graeser,i Prout, 1935 Scopula Geometridae
- umber Dyar, 1906 Perola Limacodidae
- umbra (Drury, 1782) Planema Nymphalidae
- umbra (Hufnagel, 1766) Pyrrhia Noctuidae
- umbra (Trimen, 1862) Sarangesa Hesperiidae
- umbrana (Hübner, 1799) Acleris Tortricidae
- umbraria (Hübner, 1813) Peribatodes Geometridae
- umbrata Schaus, 1905 Colla Apatelodidae
- umbrata Warren, 1893 Spilopera Geometridae
- umbratica (Goeze, 1781) Rusina Noctuidae
- umbratica (Linnaeus, 1758) Cucullia Noctuidae
- umbratilinea Warren, 1901 Scopula Geometridae
- umbricola Boisduval, 1833 Polydesma Noctuidae
- umbriferella senganella Amsel, 1950 Ambesa Pyralidae TYPUS
- umbrigera Felder & Rogenhofer, 1874 Acontia Noctuidae
- umbrilimbella (Ragonot, 1901) Ancylosis Pyralidae
- umbrina Aurivillius, 1891 Diestogyna Nymphalidae
- umbrina Karsch, 1892 Crenis Nymphalidae
- umbrona Bryk, 1953 Euglyphis Lasiocampidae TYPUS
- umbrosa Butler, 1881 Ercheia Noctuidae
- umbrosa (Butler, 1881) Hypersypnoides Noctuidae
- umbrosa (Dognin, 1912) Euglyphis Lasiocampidae
- umbrosa (Hübner, 1790) Xestia Noctuidae
- umbrosa Leech, 1898 Lophontosia Notodontidae
- umbrosa (Walker, 1865) Dysgonia Noctuidae
- umbrosalis (F. von Röslerstam, 1834) Evergestis Pyralidae
- umbrosana (Freyer, 1842) Olethreutes Tortricidae
- umbrosaria (Motschoulsky, 1864) Ecliptopera Geometridae
- umbrosaria phaedropa Prout, 1938 Ecliptopera Geometridae
- umbrosella (Zeller, 1839) Bryotropha Gelechiidae
- umbrosus Butler, 1885 Iolaus Lycaenidae
- umbrosus sudanicus Aurivillius, 1905 Jolaus Lycaenidae TYPUS
- umminia (Cramer, 1780) Platyja Noctuidae
- umovii (Eversmann, 1846) Victrix Noctuidae
- umtaliana Aurivillius, 1901 Metarbela Metarbelidae TYPUS
- unangulata (Haworth, 1809) Euphyia Geometridae
- unangulata gekatsungensis Bryk, 1948 Euphyia Geometridae TYPUS
- unanimis (Hübner, 1813) Apamea Noctuidae
- uncella (Denis & Schiffermüller, 1775) Ancylis Tortricidae
- uncinata Weymer, 1907 Taygetis Nymphalidae
- uncinatella (Ragonot, 1890) Ancylosis Pyralidae
- uncinula (Borkhausen, 1790) Watsonalla Drepanidae
- uncula (Clerck, 1759) Deltote Noctuidae
- unculana (Haworth, 1811) Ancylis Tortricidae
- undalis (Fabricius, 1781) Hellula Pyralidae
- undans (Walker, 1855) Metanastria Lasiocampidae
- undans chosenicola Bryk, 1948 Metanastria Lasiocampidae TYPUS
- undans fasciatella (Ménétries, 1858) Metanastria Lasiocampidae
- undans perexcellens Bryk, 1948 Metanastria Lasiocampidae TYPUS
- undata (Blanchard, 1849) Eupterote Eupterotidae
- undata (Fabricius, 1775) Mocis Noctuidae
- undata Freyer, 1840 Eupithecia Geometridae
- undata (Klug, 1830) Anadiasa Lasiocampidae
- undata Rothschild & Jordan, 1903 Chlaenogramma Sphingidae
- undata Rothschild & Jordan, 1903 Xylophanes Sphingidae
- undata sensu auct. Eupithecia Geometridae
- undatus (Butler, 1871) Ixias Pieridae
- undiculata Prout Eupithecia Geometridae
- undifera Staudinger, 1892 Argyrocheila Lycaenidae
- undina (Draudt, 1950) Leucania Noctuidae
- undina (Druce, 1887) Natada Limacodidae
- undiscata (Dognin, 1923) Cicinnus Mimallonidae
- undulana (Denis & Schiffermüller, 1775) Orthotaenia Tortricidae
- undulans (Hampson, 1893) Psidopala Drepanidae
- undulans Walker, 1857 Caularis Agaristidae
- undularis (Drury, 1770) Zale Noctuidae
- undularis (Hewitson, 1866) Liptena Lycaenidae
- undulata Butler, 1866 Euptychia Nymphalidae
- undulata Grünberg, 1907 Euthrix Lasiocampidae
- undulata Walker Neotherina Geometridae
- undulata (Linnaeus, 1758) Rheumaptera Geometridae
- undulata Wileman Asthena Geometridae
- undulata sajana Bryk, 1921 Rheumaptera Geometridae TYPUS
- undulatus (Herrich-Schäffer, 1861) Pholisora Hesperiidae
- undulatus (Hewitson, 1867) Urbanus Hesperiidae
- undulella (Fischer v Röslerstamm, 1837) Whittleia Psychidae
- undulifera Scheoing Eupithecia Geometridae
- unduliferaria (Motschoulsky, 1864) Euphyia Geometridae
- unduliferaria alborstrigaria (Bremer, 1864) Euphyia Geometridae
- unduliferaria geraea (Prout, 1938) Euphyia Geometridae
- unduligera Aurivillius, 1910 Cidaria Lycaenidae TYPUS
- undulosa (Alphéraky, 1888) Photoscotosia Geometridae
- undulosa Moore, 1879 Clanis Sphingidae
- undulosa (Walker, 1855) Bhima Lasiocampidae
- undulosa (Walker, 1856) Ceratomia Sphingidae
- undulosa (Walker, 1855) Tolype Lasiocampidae
- undulosa jankowskii Gehlen, 1932 Clanis Sphingidae
- unedonata Mabille, 1868 Eupithecia Geometridae
- ungues Rothschild & Jordan, 1903 Macroglossum Sphingidae
- unguicella (Linnaeus, 1758) Ancylis Tortricidae
- unibrunnea Godman & Salvin, 1877 Euploea Nymphalidae
- unibrunnea heurippa Godman & Salvin, 1888 Euploea Nymphalidae
- unicata (Guénée, 1870) Euphyia Geometridae
- unicata centralisata (Staudinger, 1871) Euphyia Geometridae
- unicolor (Oberthür, 1883) Hypsoides Notodontidae
- unicolor Oberthür, 1909 Somabrachys Somabrachyidae
- unicolor (Hopffer, 1857) Philenora Arctiidae
- unicolor Hufnagel 1766 Canephora Psychidae
- unicolor (Staudinger, 1870) Rhodobates Tineidae
- unicolor (Staudinger, 1880) Melissoblaptes Pyralidae
- unicolor (Walker, 1856) Spaelotis Noctuidae
- unicolor Westwood, 1841 Scopelodes Limacodidae
- unicolor Warren, 1913 Arenostola Noctuidae
- unicolora Swinhoe, 1902 Doratifera Limacodidae
- unicoloralis Ragonot, 1891 Macrotheca Pyralidae
- unicolorana (Duponchel, 1835) Clepsis Tortricidae
- unicolorata (Staudinger, 1871) Chloroclysta Geometridae
- unicolorella (Duponchel, 1843) Eulamprotes Gelechiidae
- unicorna Berio, 1973 Mythimna Noctuidae TYPUS
- unicornutella Amsel, 1961 Epischnia Pyralidae TYPUS
- unidentata Bryk, 1949 Pseudonerice Notodontidae TYPUS
- unifascia Wileman, 1910 Euproctis Lymantriidae
- unifascialis (Amsel, 1960) Synaphe Pyralidae
- unifasciana (Duponchel, 1842) Clepsis Tortricidae
- unifasciella (Haworth, 1828) Elachista Elachistidae
- unifenestrella Bryk, 1942 Thyris Thyrididae TYPUS
- uniforma Amsel, 1951 Tegostoma Pyralidae TYPUS
- uniformata Bergsträsser Synneuria Geometridae
- uniforme Aurivillius, 1927 Taragama Geometridae TYPUS
- uniformella Amsel, 1961 Dalakia Pyralidae TYPUS
- uniformella Rebel, 1889 Symmoca Autostichidae
- uniformis (Staudinger, 1888) Cosmia Noctuidae
- uniformis (Staudinger, 1878) Eublemma Noctuidae
- uniformis Wallengren, 1860 Heliothis Noctuidae TYPUS
- unigenella Svensson, 1966 Coleophora Coleophoridae
- unimacula Dognin, 1911 Tricentra Geometridae
- unimacula (Morrison) 1875 Graphiphora Noctuidae
- unimacularia Püngeler, 1930 Eilicrinia Geometridae
- unimaculella (Zetterstedt, 1839) Heringocrania Eriocraniidae
- unio (Hübner, 1831) Eudryas Agaristidae
- unio (Oberthür, 1880) Taeniophila Geometridae
- uniola (Rambur, 1866) Eilema Arctiidae
- unionalis (Hübner, 1796) Palpita Pyralidae
- unipecter Prout Hydrelia Geometridae
- unipectinata Aurivillius, 1910 Lepidilema Arctiidae TYPUS
- unipuncta (Hampson, 1910) Estigmene Arctiidae
- unipuncta (Haworth, 1809) Mythimna Noctuidae
- unipuncta (Haworth, 1809) Pseudaletia Noctuidae
- unipuncta Warren, 1896 Eumelea Geometridae
- unipunctana (Haworth, 1811) Rhopobota Tortricidae
- unipunctata Houlbert, 1921 Thyatira Drepanidae
- unipunctata Möschler, 1887 Laelia Lymantriidae
- unipunctata Warren, 1906 Tanaorhinus Drepanidae
- unipunctata dubitatrix Bryk, 1942 Haplothyatira Drepanidae TYPUS
- unipunctella (Stephens, 1834) Phyllocnistis Gracillariidae
- unipunctella Zeller, 1845 Coleophora Coleophoridae
- unita (Denis & Schiffermüller, 1775) Eilema Arctiidae
- unitana (Hübner, 1799) Aphelia Tortricidae
- unitella (Hübner, 1796) Batia Oecophoridae
- univitta (Hampson, 1900) Paratype Arctiidae
- unocingulata Bartel, 1912 Synanthedon Sesiidae
- upupana (Treitschke, 1835) Ancylis Tortricidae
- uralensis Rebel, 1910 Selagia Pyralidae
- uraneis (Bates, 1861) Morpho Nymphalidae
- urania Frivaldszky, 1835 Acontia Noctuidae
- urania Kirby, 1887 Epitola Lycaenidae
- urania (Linnaeus, 1758) Taenaris Nymphalidae
- urania (Müller, Seitz, 1913) Heliconius Nymphalidae
- urania (Püngeler, 1904) Oroncus Arctiidae
- urania jairus (Cramer, 1775) Taenaris Nymphalidae
- uranophila (Walker, 1866) Agyrtidia Arctiidae
- uranus (Herrich-Schäffer, 1850) Caligo Nymphalidae
- urba Wallengren, 1863 Perigea Noctuidae TYPUS
- urda Druce, 1887 Eloasa Limacodidae
- urda (Eversmann, 1847) Oeneis Nymphalidae
- urda trybomi Bryk, 1946 Oeneis Nymphalidae TYPUS
- urda monteviri Bryk, 1946 Oeneis Nymphalidae TYPUS
- urella F. von Röslerstam, 1842 Ochsenheimeria Ypsolophidae
- urens Berg, 1882 Megalopyge Megalopygidae
- urentis Guenée, 1852 Abrostola Noctuidae
- uricoecheae (Felder, 1861) Catasticta Pieridae
- uroceriformis (Treitschke, 1834) Bembecia Sesiidae
- urosticta Prout, 1935 Jodis Geometridae
- ursinella (Weber, 1945) Acrolepiopsis Acrolepiidae
- ursipes Walker, 1856 Melittia Sesiidae
- ursula (Forbes, 1936) Leucania Noctuidae
- ursula Holland, 1896 Parnara Hesperiidae
- ursula (Stoll, 1781) Epidesma Arctiidae
- urticae (Esper, 1789) Spilosoma Arctiidae
- urticae (Linnaeus, 1758) Aglais Nymphalidae
- urticae chinensis (Leech, 1892) Aglais Nymphalidae
- urticae ichnusa (Bonelli, 1832) Aglais Nymphalidae
- urticae kansuensis (Klinkowström) Aglais Nymphalidae
- urticae ladakensis (Moore, 1878) Aglais Nymphalidae
- urticae nixa (Grum-Grschimailo, 1896) Aglais Nymphalidae
- urticae obtusa (Bang-Haas, 1927) Aglais Nymphalidae
- urticae polaris (Staudinger, 1871) Aglais Nymphalidae
- urticae turcica (Staudinger, 1871) Aglais Nymphalidae
- urticana auct. Orthotaenia Tortricidae
- urupolia Bryk, 1942 Polia Noctuidae TYPUS
- usambara Aurivillius, 1906 Eronia Pieridae TYPUS
- usitata Butler, 1866 Euptychia Nymphalidae
- usitata Butler, 1879 Thyris Thyrididae
- usitata pieria Butler, 1866 Euptychia Nymphalidae
- usneata (Felder, 1875) Archaeobalbis Geometridae
- ussheri (Butler, 1870) Palla Nymphalidae
- ussurialis (Bremer, 1864) Paratalanta Pyralidae
- ussurica Puplesis, 1987 Stigmella Nepticulidae
- ussuriella Puplesis, 1984 Bohemannia Nepticulidae
- ussuriensis (Bremer, 1861) Blasticorhinus Noctuidae
- ussuriensis Petersen, 1907 Amphipoea Noctuidae
- ussuriensis Sauber Geometra Geometridae
- ustalella (Fabricius, 1794) Dichomeris Gelechiidae
- ustella (Clerck, 1759) Ypsolopha Ypsolophidae
- ustella (Ragonot, 1887) Niethammeroides Pyralidae
- ustitermina Hampson, 1910 Miresa Limacodidae
- ustomaculana (Curtis, 1831) Rhopobota Tortricidae
- ustrinalis (Christoph, 1894) Achyra Pyralidae
- ustrinaria (Herrich-Schäffer, 1854) Phellinodes Geometridae
- ustula (Freyer, 1835) Epimecia Noctuidae
- ustula obscurior Wagner, 1926 Epimecia Noctuidae
- ustulata (Felder, 1874) Eriphioides Arctiidae
- ustulana (Haworth, 1811) Endothenia Tortricidae
- ustulana (Hübner, 1813) Epinotia Tortricidae
- utilla (Hewitson, 1856) Pseudoscada Nymphalidae
- utonella (Frey, 1856) Biselachista Elachistidae
- uvui Grose-Smith, 1890 Acraea Nymphalidae
- uvui balina Karsch, 1892 Acraea Nymphalidae
- uxor (Cramer, 1780) Gonodonta Noctuidae
- uxorialis Lederer, 1858 Synaphe Pyralidae