Genus: Lasius

Lasius Fabricius, 1804: 415. Type-species: Formica nigra, by subsequent designation of Bingham, 1903: 338.

Taxonomic history

[Lasius Jurine, 1801: 164 (Apidae), resurrected by Morice & Durrant, 1915: 421, later suppressed by Act of Commission.]

Lasius in Formicinae: Mayr, 1861: 49 [Formicidae]; Mayr, 1862: 652 (in key) [Formicidae]; Mayr, 1865: 8 [Formicidae]; Mayr, 1868c: 42 [Formicidae].

Lasius in Camponotinae: Forel, 1878: 374 [Camponotidae]; Emery & Forel, 1879a: 452 [Camponotidae]; Forel, 1886f: 206; Dalla Torre, 1893: 181.

Lasius in Camponotinae, Camponotini: Forel, 1886f: 206.

Lasius in Camponotinae, Formicini: Forel, 1893a: 165; Forel, 1895b: 103; Emery, 1895j: 772; Forel, 1899c: 127; Wheeler, W.M. 1910g: 143; Forel, 1912i: 89; Wheeler, W.M. 1915h: 120.

Lasius in Formicinae, Formicini: Wheeler, W.M. 1922a: 698; Carpenter, 1930: 58; Chapman & Capco, 1951: 201; Wheeler, G.C. & Wheeler, J. 1970: 651; Wheeler, G.C. & Wheeler, J. 1976b: 101; Wheeler, G.C. & Wheeler, J. 1985: 258.

Lasius in Formicinae, Acanthomyopsini: Donisthorpe, 1943f: 655.

Lasius in Formicinae, Lasius genus group: Agosti, 1991: 296.

Lasius in Formicinae, Lasiini: Ashmead, 1905b: 384; Emery, 1925b: 226; all subsequent authors except the entries above; Bolton, 1994: 50; Bolton, 2003: 22, 96.

Lasius as junior synonym of Acanthomyops: Forel, 1916: 460; Donisthorpe, 1916c: 276; Morice & Durrant, 1917: 442. Donisthorpe, 1927b: 206; Donisthorpe, 1937d: 132; Donisthorpe, 1943f: 655; Donisthorpe, 1946g: 91.

Lasius as junior synonym of Formicina: Emery, 1916a: 61; Emery, 1916b: 239; Emery, 1917a: 96; Wheeler, W.M. 1916k: 170; Bondroit, 1918: 19.

Lasius as genus: Fabricius, 1804: 415; Wheeler, W.M. 1916k: 172; Emery, 1925b: 226; Wilson, 1955a: 11; all subsequent authors.

Junior synonyms of LASIUS

Donisthorpea Morice & Durrant, 1915: 423. Type-species: Formica nigra, by original designation.

Taxonomic history

[Unnecessary replacement name for Lasius Fabricius.]

Donisthorpea in Formicinae, Acanthomyopsini: Donisthorpe, 1943f: 640; Donisthorpe, 1946g: 91.

Donisthorpea as genus: Morice & Durrant, 1915: 423; Donisthorpe, 1915d: 184.

Donisthorpea as subgenus of Formicina: Emery, 1916a: 11; Emery, 1916b: 240.

Donisthorpea as subgenus of Acanthomyops: Donisthorpe, 1927b: 229; Donisthorpe, 1943f: 640; Donisthorpe, 1946g: 91.

Donisthorpea as junior synonym of Acanthomyops: Forel, 1916: 460; Morice & Durrant, 1917: 442; Donisthorpe, 1927b: 209.

Donisthorpea as junior synonym of Lasius: Wheeler, W.M. 1916k: 172; Emery, 1925b: 226; Wilson, 1955a: 11. [Lasius and Donisthorpea share the same type-species; synonymy is therefore absolute.]

*Tylolasius Zhang, 1989: 295. Type-species: *Tylolasius inflatus, by original designation.

Taxonomic history

*Tylolasius incertae sedis in Formicinae: Bolton, 2003: 28, 131.

*Tylolasius as junior synonym of Lasius: Hong, Wu & Ren, 2001: 348.

Subgenera of LASIUS include the nominal plus the following.

Subgenus LASIUS (ACANTHOMYOPS)

Acanthomyops Mayr, 1862: 652 (diagnosis in key), 699. Type-species: Formica clavigera, 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 Formicinae, Lasius genus group: Agosti, 1991: 296.

Acanthomyops in Formicinae, Lasiini: Ashmead, 1905b: 384 (misspelled as Acanthomyrmex); Emery, 1925b: 236; all subsequent authors except for those above.

Acanthomyops as junior synonym of Lasius: Mayr, 1866b: 888; Dalla Torre, 1893: 181.

Acanthomyops as subgenus of Formicina: Emery, 1916a: 11; Forel, 1917: 249.

Acanthomyops as genus: Mayr, 1862: 699; Donisthorpe, 1927b: 209; Donisthorpe, 1943f: 618; Creighton, 1950a: 426; Smith, M.R. 1958c: 150; Wing, 1968: 47; Bolton, 1994: 50; Bolton, 2003: 94.

Acanthomyops as subgenus of Lasius: Emery, 1893i: 642; Wheeler, W.M. 1910g: 143; Wheeler, W.M. 1916k: 172; Wheeler, W.M. 1922a: 698; Emery, 1925b: 236; Buren, 1950: 188; Smith, M.R. 1951a: 852; Gregg, 1963: 453; Ward, 2005: 13.

Subgenus LASIUS (DENDROLASIUS)

Dendrolasius Ruzsky, 1912: 630 [as subgenus of Lasius]. Type-species: Formica fuliginosa, by monotypy.

Taxonomic history

[Dendrolasius also described as new by Ruzsky, 1914a: 59.]

Dendrolasius as subgenus of Formicina: Forel, 1917: 249.

Dendrolasius as subgenus of Acanthomyops: Donisthorpe, 1927b: 211; Donisthorpe, 1943f: 637.

Dendrolasius as subgenus of Lasius: Ruzsky, 1912: 630; Wheeler, W.M. 1922a: 698; Emery, 1925b: 235; Wilson, 1955a: 14; all subsequent authors except the following.

Dendrolasius as junior synonym of Lasius: Brown, 1973b: 180 [provisional].

Subgenus LASIUS (CHTHONOLASIUS)

Chtonolasius Ruzsky, 1912: 630 [as subgenus of Lasius]. Type-species: Formica umbrata, by subsequent designation of Emery, 1925b: 232.

Taxonomic history

[Chtonolasius also described as new by Ruzsky, 1914a: 59. The claim by some authors (e.g. Emery, 1916a: 11; Donisthorpe, 1941f: 37; Donisthorpe, 1943f: 633) that Ruzsky nominated Lasius flavus as type-species is incorrect. Ruzsky (1912: 630) included those species "with the appearance of the yellow Lasius (Las. flavus D.G.) and its closely related species, and races (Las. carniolicus, Las. umbratus, Las. myops, Las. mixtus)". This is not a direct nomination of a type-species, nor is De Geer (= D.G.) the author of flavus