FORMICIDAE: CATALOGUE OF GENUS-GROUP TAXA ACALAMA [junior synonym of Gauromyrmex] Acalama Smith, M.R. 1949a: 206. Type-species: Acalama donisthorpei Smith, M.R. 1949a: 207 (junior synonym of Solenomyrma acanthina Karavaiev, 1935a: 103), by original designation. Taxonomic history Acalama incertae sedis in Myrmicinae: Smith, M.R. 1949a: 206. Acalama as junior synonym of Vollenhovia: Hölldobler & Wilson, 1990: 16; Tang, J., Li, et al. 1995: 63. Acalama as junior synonym of Gauromyrmex: Brown, 1953c: 10; Bolton, 1995b: 18; Bolton, 2003: 246. ACAMATUS [junior homonym, replaced by Neivamyrmex] Acamatus Emery, 1894c: 181 [as subgenus of Eciton]. Type-species: Eciton (Acamatus) schmitti Emery, 1894c: 183 (diagnosis in key) (junior synonym of Labidus nigrescens Cresson, 1872: 194), by subsequent designation of Ashmead, 1906: 24, Wheeler, W.M. 1911f: 157. Taxonomic history [Junior homonym of Acamatus Schoenherr, 1833: 20 (Coleoptera).] Acamatus in Dorylidae, Ecitoninae, Ecitonini: Ashmead, 1905b: 381; Ashmead, 1906: 24. Acamatus in Dorylinae, Ecitonini: Emery, 1910b: 23 [Ecitini]. Acamatus as genus: Ashmead, 1905b: 381; Ashmead, 1906: 24. Acamatus as subgenus of Eciton: Emery, 1894c: 181; Emery, 1895j: 765; Emery, 1900a: 186; Emery, 1910b: 23; Wheeler, W.M. 1910g: 138; Forel, 1917: 240; Luederwaldt, 1918: 37; Gallardo, 1920: 345; Wheeler, W.M. 1922a: 635; Borgmeier, 1923: 44; Donisthorpe, 1943f: 618. Neivamyrmex Borgmeier, 1940: 606, replacement name for Acamatus Emery. ACANTHIDRIS [junior synonym of Rhopalothrix] Acanthidris Weber, 1941a: 188. Type-species: Acanthidris isthmicus Weber, 1941a: 188, by original designation. Taxonomic history Acanthidris in Myrmicinae, Dacetini: Weber, 1941a: 183 [Dacetonini]; Donisthorpe, 1943f: 618; Brown, 1948e: 102. Acanthidris in Myrmicinae, Basicerotini: Brown, 1949f: 94. Acanthidris as junior synonym of Rhopalothrix: Brown & Kempf, 1960: 230; Kempf, 1972a: 226; Hölldobler & Wilson, 1990: 15; Bolton, 1995b: 18; Bolton, 2003: 185. ACANTHOCLINEA [junior synonym of Dolichoderus] Acanthoclinea Wheeler, W.M. 1935c: 69 [as subgenus of Dolichoderus]. Type-species: Dolichoderus doriae Emery, 1887a: 252, by original designation. Taxonomic history Acanthoclinea in Dolichoderinae, Dolichoderini: Donisthorpe, 1943f: 618. Acanthoclinea as subgenus of Dolichoderus: Wheeler, W.M. 1935c: 69; Donisthorpe, 1943f: 618. Acanthoclinea as genus: Brown, 1950e: 249. Acanthoclinea as junior synonym of Hypoclinea: Hölldobler & Wilson, 1990: 17. Acanthoclinea as junior synonym of Dolichoderus: Brown, 1973b: 178 [provisional]; Taylor & Brown, 1985: 93; Shattuck, 1992c: 66; Shattuck, 1994: 40; Bolton, 1994: 26; Bolton, 1995b: 18; Bolton, 2003: 85. ACANTHOGNATHUS [Myrmicinae: Attini] Acanthognathus Mayr, 1887: 567 (diagnosis in key), 578. Type-species: Acanthognathus ocellatus Mayr, 1887: 579, by monotypy. Taxonomic history Acanthognathus in Myrmicinae: Dalla Torre, 1893: 148 [Myrmicinae]. Acanthognathus in Cryptoceridae, Dacetini: Ashmead, 1905b: 384 [Dacetonini]. Acanthognathus in Myrmicinae, Dacetini, Dacetiti: Brown, 1954b: 465; Brown & Wilson, 1959b: 281; Brandão, 1991: 322. Acanthognathus in Myrmicinae, Dacetini: Forel, 1892d: 344; Forel, 1893a: 164; Forel, 1895b: 136; Emery, 1895j: 770; Emery, 1896e: 180; Wheeler, W.M. 1910g: 141; Emery, 1914a: 42; Forel, 1917: 246; Wheeler, W.M. 1922a: 666; Emery, 1924d: 317; Brown, 1948e: 102; Kempf, 1972a: 9; Bolton, 1995b: 18; Bolton, 1999: 1650; Bolton, 2000: 15; Bolton, 2003: 54, 186. Acanthognathus in Attini: Ward, et al. 2015: 77. Acanthognathus as genus: all authors. Acanthognathus catalogues: Dalla Torre, 1893: 148; Emery, 1924d: 317; Kempf, 1972a: 9; Bolton, 1995b: 53. Acanthognathus references: Emery, 1924d: 317 (diagnosis); Smith, M.R. 1944c: 150 (all species key); Brown & Kempf, 1969: 89 (diagnosis, all species revision, key); Gronenberg, Brandão, et al. 1998: 227 (mandible mechanism); Bolton, 1999: 1650 (diagnosis, review of genus, phylogeny); Bolton, 2000: 15 (diagnosis, species synopsis); Galvis & Fernández, 2009: 247 (all species key); Baccaro, et al. 2015: 204 (genus in Brazil); Fernández & Serna, 2019: 831 (Colombia species key). ACANTHOLEPIS [junior homonym, replaced by Lepisiota] Acantholepis Mayr, 1861: 42. Type-species: Hypoclinea frauenfeldi Mayr, 1855: 378, by monotypy. Taxonomic history [Junior homonym of Acantholepis Kroyer, 1846: 98 (Pisces).] Acantholepis in Formicinae: Mayr, 1861: 42 [Formicinae]; Mayr, 1862: 652 [Formicidae]; Mayr, 1865: 9 [Formicidae]. Acantholepis in Camponotinae: Forel, 1878: 378 [Camponotidae]; Emery & Forel, 1879: 453 [Camponotidae]; Dalla Torre, 1893: 171 [Camponotinae]; Emery, 1896e: 188 [Camponotinae]. Acantholepis in Camponotinae, Plagiolepidini: Forel, 1886f: 212; Forel, 1893a: 165; Emery, 1895j: 771; Wheeler, W.M. 1910g: 143; Forel, 1912i: 88; Emery, 1916b: 220; Forel, 1917: 249; Arnold, 1920a: 554. Acantholepis in Formicinae, Pseudolasius genus group: Agosti, 1991: 296. Acantholepis in Formicinae, Plagiolepidini: Ashmead, 1905b: 384; Wheeler, W.M. 1922a: 696; Emery, 1925b: 23; Santschi, 1926a: 15; subsequent authors; Bolton, 1973a: 363; Hölldobler & Wilson, 1990: 18. Acantholepis as genus: Mayr, 1862: 652; Mayr, 1863: 394; Roger, 1863b: 11; Mayr, 1865: 9; Forel, 1878: 378; Dalla Torre, 1893: 171; Emery, 1896e: 188; Ashmead, 1905b: 384; Emery, 1916b: 219; Emery, 1925b: 23; subsequent authors; Bolton, 1973a: 363; Hölldobler & Wilson, 1990: 18; Tang, J., Li, et al. 1995: 95. Lepisiota Santschi, 1926a: 15, replacement name for Acantholepis Mayr. [PSEUDACANTHOLEPIS Bernard, 1953b: 256 (attributed to Santschi) [as subgenus of Acantholepis]. Unavailable name (proposed without designation of type-species); included taxa referable to Lepisiota (Bolton, 1995b: 44).] [ACHANTILEPIS: incorrect subsequent spelling by Santschi, 1935b: 274.] ACANTHOMYOPS [subgenus of Lasius] Acanthomyops Mayr, 1862: 652 (diagnosis in key), 699. Type-species: Formica clavigera Roger, 1862a: 241, by monotypy. Taxonomic history Acanthomyops in Formicinae: Mayr, 1862: 652 (in key) [Formicidae]; Mayr, 1865: 8 [Formicidae]. Acanthomyops in Camponotinae, Formicini: Wheeler, W.M. 1910g: 143; Forel, 1917: 249. Acanthomyops in Formicinae, Formicini: Wheeler, W.M. 1922a: 698; Wheeler, G.C. & Wheeler, J. 1970: 651; Wheeler, G.C. & Wheeler, J. 1976b: 101; Wheeler, G.C. & Wheeler, J. 1985: 258; Jaffe, 1993: 14. Acanthomyops in Formicinae, Acanthomyopsini: Donisthorpe, 1943f: 618. Acanthomyops in Formicini + Lasiini: Hölldobler & Wilson, 1990: 18. Acanthomyops in Lasius genus group: Agosti, 1991: 296. Acanthomyops in Lasiini: Ashmead, 1905b: 384; Emery, 1925b: 236; Bolton, 1995b: 18; Bolton, 2003: 22, 94. Acanthomyops as junior synonym of Lasius: Mayr, 1866b: 888; Dalla Torre, 1893: 181. Acanthomyops as subgenus of Formicina: Emery, 1916a: 11; Wheeler, W.M. 1916k: 171; Forel, 1917: 249. Acanthomyops as genus: Mayr, 1863: 394; Roger, 1863b: 11; Mayr, 1865: 8; Forel, 1916: 460; Donisthorpe, 1927b: 209; Donisthorpe, 1943f: 618; Creighton, 1950a: 426; Smith, M.R. 1958c: 150; Wing, 1968: 47; Smith, D.R. 1979: 1435; Hölldobler & Wilson, 1990: 18; Bolton, 1994: 50; Bolton, 1995b: 18; Bolton, 2003: 22, 94. Acanthomyops as subgenus of Lasius: Emery, 1893i: 642; Wheeler, W.M. 1910g: 143; Wheeler, W.M. 1916k: 171; Wheeler, W.M. 1922a: 698; Emery, 1925b: 236; Buren, 1950: 188; Smith, M.R. 1951a: 852; Gregg, 1963: 453; Ward, 2005: 13. [ACANTHOMYRMEX: incorrect subsequent spelling by Ashmead: 1905b: 384 (in error for Acanthomyops).] Acanthomyops references: included under Lasius. ACANTHOMYRMEX [Myrmicinae: Crematogastrini] Acanthomyrmex Emery, 1893a: cclxxvi. Type-species: Acanthomyrmex luciolae Emery, 1893a: cclxxvi, by subsequent designation of Bingham, 1903: 191. Taxonomic history [Acanthomyrmex also described as new by Emery, 1893f: 244.] Acanthomyrmex in Myrmicinae: Emery, 1896e: 183. Acanthomyrmex in Myrmicinae, Myrmicini: Emery, 1895j: 769; Ashmead, 1905b: 383; Wheeler, W.M. 1910g: 139. Acanthomyrmex in Myrmicinae, Pheidolini: Hölldobler & Wilson, 1990: 16 (error). Acanthomyrmex in Myrmicinae, Myrmecinini: Emery, 1912b: 105; Emery, 1914a: 41; Forel, 1917: 244; Wheeler, W.M. 1922a: 663; Emery, 1924d: 234 [subtribe Myrmecinini]; Bolton, 1995b: 18; Bolton, 2003: 71, 255. Acanthomyrmex in Crematogastrini: Ward, et al. 2015: 77; in Crematogastrini, Myrmecina genus group: Blaimer, et al. 2018: 7. Acanthomyrmex as genus: all authors. [ACANTHONYRMEX: incorrect subsequent spelling by Ashmead, 1905b: 383.] Acanthomyrmex catalogues: Emery, 1924d: 234; Chapman & Capco, 1951: 114 (Asia); Bolton, 1995b: 53. Acanthomyrmex references: Emery, 1924d: 234 (diagnosis); Moffett, 1986c: 66 (diagnosis, all species revision, key); Eguchi, et al. 2011: 11 (diagnosis, Vietnam synopsis); Yamada, Ito, et al. 2018: 10 (gyne morphotypes list); Jaitrong & Asanok, 2019: 133 (Thailand species key). ACANTHOPONERA [Heteroponerinae] Acanthoponera Mayr, 1862: 732 [as subgenus of Ectatomma]. Type-species: Ponera mucronata Roger, 1860: 299, by subsequent designation of Emery, 1911d: 36, Wheeler, W.M. 1911f: 158. [Note: Emery, 1911d: 36, and Wheeler, W.M. 1911f: 158, both nominated mucronata as type-species. According to Evenhuis (1994), Emery, 1911d was published on 9.ix.1911, which is slightly earlier than Wheeler, W.M. 1911f, published on 17.x.1911.] Taxonomic history Acanthoponera in Ponerinae: Mayr, 1862: 732 [Poneridae]; Dalla Torre, 1893: 23 [Ponerinae]; Emery, 1896e: 178 [Ponerinae]. Acanthoponera in Pachycondylinae, Ectatommini: Ashmead, 1905b: 382. Acanthoponera in Ponerinae, Ectatommini: Emery, 1895j: