International Commission on Zoological Nomenclature:
Op. — see: OPINIONS

Direction — see: DIRECTIONS

taxa names:

Un

una [Leach 1814] [originally in Uca], in Brewster’s Edinburgh Ency., 7(2): 430 (a junior objective synonym of Cancer vocans major Herbst 1782). Opinion 712  

unalaschkensis Gmelin [1789] [originally in Hirundo], in Linnaeus, Systema Naturae, Ed. 13, vol. 1, part 2, p. 1025 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 409

undalis Fabricius 1781 [originally in Phalaena], Spec. Ins., 2: 272 (specific name of the type species of Hellula Guénée 1854) (Insecta, Lepidoptera). Opinion 536

undata A. Smith 1838 [originally in Lacerta], Magazine of Natural History, (2)14: 93, as defined by the neotype (adult male specimen NMW 31886 from near Windhoek, Namibia, in the Naturhistorisches Museum, Wien) designated under the plenary power (Reptilia). Opinion 1992  

undatum Linnaeus 1758 [originally in Buccinum], Systema Naturae, Ed. 10, vol. 1, p. 740 (specific name of the type species of Buccinum Linnaeus 1758) (Gastropoda). Direction 73

undatus Fabricius 1781 [originally in Curculio], Species insectorum ..., 1: 189 (specific name of the type species of Polydrusus Germar 1817) (Insecta, Coleoptera). Opinion 1179  

undatus Olivier 1792 [originally in Erotylus], Encyclopédie méthodique. Histoire naturelle des insectes, vol. 6, p. 434 (specific name of the type species of Megischyrus Crotch 1873) (Insecta, Coleoptera). Opinion 1824 

undecimanae Lewkowicz 1897 [originally in Haemosporidium], Zbl. Bakt. (Abt. 1), 21(4): 133 (published as a technical designation, not as a specific name, and therefore possesses no status under the Code). Opinion 283

undecimnotata Schneider [1792] [originally in Coccinella], Neuestes Magazin für die Liebhaber der Entomologie, 1(3): 379 (Insecta, Coleoptera). Opinion 1693

undecimpunctata Mannerheim 1843 [originally in Diabrotica], Bulletin de la Société Impériale des Naturalistes de Moscou, 16: 309, as defined by the lectotype designated by Smith & Lawrence 1967, University of California Publications in Entomology, 45: 136 (Insecta, Coleoptera). Opinion 1709 

undulalis Hübner 1796 [originally in Pyralis], Samml. eurOpinion Schmett.: pl. Pyr. 14, fig. 93 (an incorrect subsequent spelling for undalis Fabricius 1781 [originally in Phalaena]). Opinion 536  

undularis Hewitson [1866] [originally in Liptena], Ill. exot. Butts., 3: [120], pl. [60], fig. 7 (specific name of the type species of Liptena Westwood [1851]) (Insecta, Lepidoptera). Opinion 566 

undulata Kutschera 1860 [originally in Haltica] (Coleoptera). ICZN 2015: Opinion 2351

undulata Retzius 1783 [originally in Phalaena cinerea] (Arthropoda). ICZN 2014: Opinion 2333

undulatum Sowerby 1806 [originally in Acrydium], Brit. Miscell. (no. 12): 78, as interpreted by the neotype designated by Kevan (1961, Bull. zool. Nomencl., 18: 381) (Insecta, Orthoptera). Opinion 1204 

undulatus Kugelann 1792 [originally in Byrrhus], Neuestes Magazin für die Liebhaber der Entomologie, 1(2-4): 484 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy) (Insecta, Coleoptera). Opinion 1396  

Ungaliopheinae McDowell 1987 (Reptilia). ICZN 2020: Opinion 2454

Ungaliophis Müller 1880 (Reptilia). ICZN 2020: Opinion 2454

Ungaliophiidae McDowell 1987 (Reptilia). ICZN 2020: Opinion 2454

unguiculatus Westwood 1841 [originally in Foenus], Annals and Magazine of Natural History, 7: 537 (specific name of the type species of Pseudofoenus Kieffer 1902) (Insecta, Hymenoptera). Opinion 1912 

Unguis Bertrand 1763, Dict. Univ. Foss. Propres Foss. Accid., 2: 80 (included in a work rejected for nomenclatural purposes). Opinion 592 

ungulata Linnaeus 1758 [originally in Musca], Systema Naturae, Ed. 10, vol. 1, p. 598 (specific name of the type species of Dolichopus Latreille 1796) (Insecta, Diptera). Direction 49

Ungulinigenus [Renier] [1807], [Tav. serv. Class. Conn. Anim.]: Tav. VII (included in a work rejected for nomenclatural purposes). Opinion 427

unicolor Tschudi 1838 [originally in Cornufer], Classif. der Batrachier [preprint of Mém. Soc. Sci. nat. Neuchâtel, 2]: 28, and all uses of that name prior to its publication by Stejneger 1904, in the binomen Eleutherodactylus unicolor (suppressed under the plenary power for the purposes of both the Principle of Priority and the Principle of Homonymy). Opinion 1104

unicolor Blyth 1843 [originally in Cyornis], J. Asiatic Soc. Bengal, 12: 1007 (Aves). Opinion 1267

unicolor Stejneger 1904 [originally in Eleutherodactylus], Report U.S. Nat. Mus. for 1902: 597 (Amphibia). Opinion 1104 

unicolor Kiesenwetter 1847 [originally in Quedius], Histoire naturelle des insectes coléoptères, vol. 1, p. 75, ruled under the plenary power to be not invalid by reason of being a junior primary homonym of Q. unicolor Stephens 1832 (Insecta, Coleoptera). Opinion 2053

unicolor Leske 1778 [originally in Spatangus brissus var.], Addit. J.T. Klein Nat. Disp. Echin.: 248, pl. 26, figs. B, C (specific name of the type species of Brissus Gray 1825) (Echinoidea). Opinion 209

unicolor Mulsant & Rey 1878 [originally in Sunius], Annales de la Société Linnéenne de Lyon, (n. ser.)24(1877): 276, ruled under the plenary power to be not invalid by reason of being a junior primary homonym of S. unicolor Stephens 1839 or S. unicolor Curtis 1840 (each is a nomen oblitum under Article 23.9.2) (Insecta, Coleoptera). Opinion 2139  

unidentatus Kolenati 1859 [originally in Ctenophthalmus], Jh. k.k. mähr. schl. Ges. Ackerbau, Natur- und Landeskunde, 1858: 65 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 741  

unifilis Troschel 1848 [originally in Podocnemis] (Reptilia). ICZN 2019: Opinion 2431

uniguttatus Donovan 1804 [originally in Cimex], Nat. Hist. Ins. Ind.: text to pl. [14] (specific name of the type species of Sastragala Amyot & Serville 1843) (Insecta, Hemiptera). Direction 63  

Uniigenus [Renier] [1807], [Tav. serv. Class. Conn. Anim.]: Tav. VII (included in a work rejected for nomenclatural purposes). Opinion 427 

unilamellata Mousson 1856 [originally in Clausilia] (Gastropoda). ICZN 2021: Opinion 2481

Unio Philipsson 1788, Dissertatio Hist. nat. sist. nova Test. Gen.: 17 (gender: masculine) (type species, by designation under the plenary power: Mya pictorum Linnaeus 1758, Systema Naturae, Ed. 10, vol. 1, p. 671) (Bivalvia). Opinion 495

UNIONIDAE Rafinesque 1820, Ann. gén. Sci. phys., Bruxelles, 5: 290 (type genus: Unio Philipsson 1788) (Bivalvia). Opinion 495

uniseriatum Piaget 1880 [originally in Colpocephalum], Pédiculines: 562, pl. 47, fig. 2 (specific name of the type species of Actornithophilus Ferris 1916) (Insecta, Mallophaga). Opinion 342

unispinosus Quenstedt 1847 [originally in Ammonites athleta], Petrefactenkunde Deutschlands. Die Cephalopoden, p. 190, ruled under the plenary power to be an available name (specific name of the type species of Unipeltoceras Jeannet 1951) (Ammonoidea). Opinion 2123

unistriatus Schrank 1781 [originally in Dytiscus] (Coleoptera). ICZN 2021: Opinion 2470

universa d’Orbigny 1839 [originally in Orbulina], in Sagra, Hist. phys. pol. nat. Ile de Cuba: 3 (specific name of the type species of Orbulina d’Orbigny 1839) (Rhizopoda). Opinion 552