• Combination in Liometopum: Wheeler, 1902g: 23.
• [Note: Wheeler, 1902g: 23, indicates synonymy of Liometopum masonium with either Liometopum apiculatum or Liometopum occidentale, but can not determine which.]
• Status as species: Cresson, 1887: 256; Dalla Torre, 1893: 201.
• Unidentifiable taxon; incertae sedis in Dolichoderinae: Smith, 1979: 1422; Shattuck, 1994: 171
• Unidentifiable taxon; incertae sedis in Liometopum: Smith, 1951c: 835; Smith, 1958c: 141; Bolton, 1995b: 247.
• Nomen oblitum, synonym of Liometopum apiculatum: Del Toro et al., 2009: 309.

Obsolete combinations

• Formica masonia

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Buckley, S. B. 1866. Descriptions of new species of North American Formicidae. Proceedings of the Entomological Society of Philadelphia 6:152-172. PDF
• Cresson, E. T. Sr. 1887. Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. Transactions of the American Entomological Society, Suppl. Vol. 1887:1-351. PDF
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Del Toro, I.; Pacheco, J. A.; MacKay, W. P. 2009. Revision of the ant genus Liometopum (Hymenoptera: Formicidae). Sociobiology 53:299-369. PDF
• Shattuck, S. O. 1994. Taxonomic catalog of the ant subfamilies Aneuretinae and Dolichoderinae (Hymenoptera: Formicidae). University of California Publications in Entomology 112:i-xix, 1-241. PDF
• Smith, D. R. 1979. Superfamily Formicoidea. Pp. 1323-1467 in: Krombein, K. V.; Hurd, P. D.; Smith, D. R.; Burks, B. D. (eds.) 1979. Catalog of Hymenoptera in America north of Mexico. Volume 2. Apocrita (Aculeata). Washington, D.C.: Smithsonian Institution Press, pp. i-xvi, 1199-2209.
• Smith, M. R. 1951c. Family Formicidae. Pp. 778-875 in: Muesebeck, C. F. W.; Krombein, K. V.; Townes, H. K. (eds.) 1951. Hymenoptera of America north of Mexico. Synoptic catalogue. United States Department of Agriculture. Agriculture Monograph 2:1-1420. PDF
• Smith, M. R. 1958c. Family Formicidae. Pp. 108-162 in: Krombein, K. V. (ed.) 1958. Hymenoptera of America north of Mexico. Synoptic catalogue. First supplement. United States Department of Agriculture. Agriculture Monograph 2(suppl. 1):1-305. PDF
• Wheeler, W. M. 1902g. A consideration of S. B. Buckley's "North American Formicidae.". Transactions of the Texas Academy of Sciences 4:17-31. PDF