International Commission on Zoological Nomenclature:
OPINIONS and DIRECTIONS

taxa names:

Sy

sybillae Valenciennes 1858 [originally in Mactra], C.R. Acad. Sci., 46: 760 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 1366

Sycionia Hübner [1826], Verz. bekannt. Schmett., Anz.: 7 (emendation of Sicyonia Hübner 1816) (suppressed under the plenary power for the purposes of both the Principle of Priority and the Principle of Homonymy). Opinion 382 

Sycocrypta Coquerel 1855, Rev. Mag. Zool., (2)7: 367, 422-425, pl. 10, fig. 3 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 682  

sycophanta Fairmaire 1887 [originally in Onthophagus], Annales de la Société Entomologique de Belgique, 31: 100 (all uses of the name before Fairmaire (1887) suppressed under the plenary power for the purposes of both the Principle of Priority and the Principle of Homonymy) (Coleoptera) Opinion 2200  

sycophanta Mulsant 1842 [originally in Onthophagus], Histoire Naturelle des Coléoptères de France. Lamellicornes, p. 106 (Coleoptera) Opinion 2200 

Syllarus Rafinesque 1815, Analyse Nature: 98 (a junior objective synonym of Scyllarus Fabricius 1775). Opinion 522  

Syllitini Thomson 1864 (Coleoptera). ICZN 2020: Opinion 2448

Syllitus Pascoe 1859 (Coleoptera). ICZN 2020: Opinion 2448

sylvanus Drury 1773 [originally in Papilio], Illustrations of natural history; wherein are exhibited ... figures of exotic insects, vol. 2, p. 5 (Insecta, Lepidoptera). Opinion 1944  

sylvanus Esper 1777 [originally in Papilio], Die Schmetterlinge in Abbildungen nach der Natur mit Beschreibungen, Theil 1 (Europäische Gattungen), pl. 36, suppl. 12, fig. 1, ruled under the plenary power not to be invalid by reason of being a junior primary homonym of Papilio sylvanus Drury 1773 (Insecta, Lepidoptera). Opinion 1944

sylvarum Linnaeus 1758 [originally in Musca], Systema Naturae, Ed. 10, vol. 1, p. 592 (specific name of the type species of Xylota Meigen 1822) (Insecta, Diptera). Opinion 1747 

sylvaticus Meigen 1824 [originally in Pipunculus], Syst. Beschr. zweifl. Ins., 4: 20 (specific name of the type species of Tomosvaryella Aczél 1939) (Insecta, Diptera). Opinion 597

sylvestris De Geer 1778 [originally in Aranea resupina] (Arthropoda). ICZN 2014: Opinion 2333

sylvestris Linnaeus 1758 [originally in Cimex], Systema Naturae, Ed. 10, vol. 1, p. 449 (specific name of the type species of Ligyrocoris Stål 1872) (Insecta, Hemiptera). Direction 63

sylvestris Link 1795 [originally in Simia], Beyträge Naturges., 1(2): 61 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 1268 

sylvicola Kerr 1792 [originally in Simia (Papio)], The Animal Kingdom, Mammalia: 61 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 935  

sylvius Dalman 1820 [originally in Encyrtus], K. svensk. Vetenskaps Akad. Handl., (1)20: 154 (specific name of the type species of Microterys Thomson [1876]) (Insecta, Hymenoptera). Opinion 1110

Symathus Rafinesque 1815, Analyse Nature: 98 (an incorrect subsequent spelling for Symethus Rafinesque 1814). Opinion 522  

symbiotes Kemp 1922 [originally in Dasycaris], Rec. Indian Mus., 24: 240 (specific name of the type species of Dasycaris Kemp 1922) (Crustacea, Decapoda). Opinion 470  

Symethus Rafinesque 1814, Précis Découv. Trav. somiolog.: 23 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 522  

symmysta Linnaeus 1758 [originally in Cancer], Systema Naturae, Ed. 10, vol. 1, p. 630 (specific name of the type species of Albunea Weber 1795) (Crustacea, Decapoda). Opinion 522  

Symnista Rafinesque 1815, Analyse Nature: 98 (a junior objective synonym of Albunea Weber 1795). Opinion 522

Symphaedra Hübner 1819, Zutr. Samml. exot. Schmett., 1: 7, pl. [1], figs. 1, 2 (gender: feminine) (type species, by designation by Scudder 1875 (Proc. amer. Acad. Arts Sci., Boston, 10: 272): Symphaedra alcandra Hübner 1819, Zutr. Samml. exot. Schmett., 1: 7, pl. [1], figs. 1, 2) by direction under the plenary power, not available for use in preference to Euthalia Hübner [1819] (type species: Papilio lubentina Cramer [1777]), but available for use by those who do not consider the type species of these two genera to be congeneric with one another (Insecta, Lepidoptera). Direction 2

Symphysopus Tilesius von Tilenau 1818, Ann. wetterau. Ges. Naturk., 4: 9 (included in a work suppressed under the plenary power for nomenclatural purposes). Opinion 864  

symphyti Heikertinger 1912 [originally in Longitarsus], Entomologische Blätter, 8(3): 69 (Insecta, Coleoptera). Opinion 1656

Synalpheus Bate 1888, Rep. Voy. ‘Challenger’ (Zool.), 24: 572 (gender: masculine) (type species, by monotypy: Synalpheus falcatus Bate 1888, Rep. Voy. ‘Challenger’ (Zool.), 24: 574, valid name: Alpheus comatularum Haswell 1882) (Crustacea, Decapoda). Opinion 470

Synaptiphilus Canu & Cuénot 1892, in Cuénot, Rev. Biol. Nord. France, 5: 19, 21, 22 (gender: masculine) (type species, by monotypy: Synaptiphilus luteus Canu & Cuénot 1892, in Cuénot, Rev. Biol. Nord. France, 5: 19, 21, 22) (Crustacea, Copepoda). Opinion 815 

Synapturanus Carvalho 1954, Occasional Papers of the Museum of Zoology, University of Michigan, 555: 17 (gender: masculine) (type species, by designation under the plenary power: Synapturanus mirandaribeiroi Nelson & Lescure 1975) (Amphibia, Anura). Opinion 1513

Syncaris Holmes 1900, Occ. Pap. Calif. Acad. Sci., 7: 211 (gender: feminine) (type species, by original designation: Miersia pacifica Holmes 1895, Proc. Calif. Acad. Sci., (2)4: 577) (Crustacea, Decapoda). Opinion 470  

syndactyla Raffles 1821 [originally in Simia], Trans. linn. Soc. London, 13: 241, ruled under the plenary power to be given precedence over the specific name gibbon Miller 1779, as published in the binomen Simia gibbon, whenever the two names are considered synonyms (Mammalia). Opinion 1224 

Syngamus Siebold 1836, Arch. Naturgesch., 2(1): 105 (gender: masculine) (type species, by monotypy and through Opinion 104 and Article 67e (1961 Code): Fasciola trachea Montagu 1811, Mem. werner. nat. Hist. Soc., 1: 197) (Nematoda). Opinion 104 

Syngnathus Linnaeus 1758, Systema Naturae, Ed. 10, vol. 1, p. 336 (gender: masculine) (type species, by designation by Jordan 1912 (Smithson. Publ., 2060: 103): Syngnathus acus Linnaeus 1758, Systema Naturae, Ed. 10, vol. 1, p. 337) (Osteichthyes). Opinion 77, Direction 56. Also discussed in Opinion 45

Syngnathus Rafinesque 1810, Ind. Itt. Sic.: 57 (a junior homonym of Syngnathus Linnaeus 1758). Direction 56  

Synurella Wrzesniowski 1877, in Hoyer, Zeitschr. wiss. Zool., 28: 403 (gender: feminine) (type species, by monotypy: Synurella polonica Wrzesniowski 1877, in Hoyer, Zeitschr. wiss. Zool., 28: 403) (Crustacea, Amphipoda). Opinion 1133

syriacus Rothschild 1910 [originally in Struthio camelus], Bull. brit. Ornith. Club, 39: 83 (type locality: ‘Syrian desert’) (Aves). Opinion 413

syrichta Linnaeus 1758 [originally in Simia], Systema Naturae, Ed. 10, vol. 1, p. 29 (valid name at the date of Direction 22 of the type species of Tarsius Storr 1780) (Mammalia). Direction 22. 

Syringothyris Winchell 1863, Proc. Acad. nat. Sci. Philadelphia, 1863: 6 (gender: feminine) (type species, by original designation through Article 68c: Syringothyris typa Winchell 1863, Proc. Acad. nat. Sci. Philadelphia, 1863: 6) (Brachiopoda). Opinion 100

Syrrhaptes Illiger 1811, Prodr. Syst. Mamm. Avium: 243 (gender: masculine) (type species, by monotypy: Tetrao paradoxa Pallas 1773, Reise russ. Reichs, 2: 712) (Aves). Opinion 67

Syrrhophus Cope 1878, Am. Nat., 12: 253 (gender: masculine) (type species, by monotypy: Syrrhophus marnockii Cope 1878, Am. Nat., 12: 253) (Amphibia). Opinion 1024

Systellaspis Bate 1888, Rep. Voy. ‘Challenger’ (Zool.), 24: 757 (gender: feminine) (type species, by original designation: Systellaspis lanceocaudata Bate 1888, Rep. Voy. ‘Challenger’ (Zool.), 24: 758) (Crustacea, Decapoda). Opinion 470