• [Justified emendation of spelling to Polyrhachis armata defensa by B. Bolton.]
• Combination in Polyrhachis (Myrmhopla): Emery, 1925d: 192.
• Junior synonym of Polyrhachis armata: Roger, 1863b: 9; Mayr, 1872: 139; Mayr, 1886c: 356; Forel, 1886d: 241; Forel, 1893e: 34; Dalla Torre, 1893: 258; Emery, 1896j: 381; Wheeler, 1919f: 129; Dorow, 1995: 47.
• Status as species: Smith, 1858a: 62; Mayr, 1863a: 444; Bingham, 1903: 393 (in text); Crawley, 1924a: 407.
• Subspecies of Polyrhachis armata: Emery, 1925d: 192; Donisthorpe, 1932c: 445; Karavaiev, 1935a: 113; Chapman & Capco, 1951: 285; Bolton, 1995b: 347; Bharti et al., 2016: 30; Wang et al., 2022: 61.
• Senior synonym of Polyrhachis armata minor: Bingham, 1903: 393 (in text); Emery, 1925d: 192; Dorow, 1995: 47; Bolton, 1995b: 347.

Junior synonyms

• Polyrhachis armata minor Forel, 1886

Obsolete combinations

• Polyrhachis defensa

Citations

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• Bingham, C. T. 1903. The fauna of British India, including Ceylon and Burma. Hymenoptera, Vol. II. Ants and Cuckoo-wasps. London: Taylor and Francis, 506 pp. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Chapman, J. W.; Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monographs of the Institute of Science and Technology. Manila 1:1-327. PDF
• Crawley, W. C. 1924a. Ants from Sumatra, with biological notes by Edward Jacobson. Annals and Magazine of Natural History (9)13:380-409. PDF
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Donisthorpe, H. 1932c. On the identity of Smith's types of Formicidae (Hymenoptera) collected by Alfred Russell Wallace in the Malay Archipelago, with descriptions of two new species. Annals and Magazine of Natural History (10)10:441-476. PDF
• Dorow, W. H. O. 1995. Revision of the ant genus Polyrhachis Smith, 1857 (Hymenoptera: Formicidae: Formicinae) on subgenus level with keys, checklist of species and bibliography. Courier Forschungsinstitut Senckenberg 185:1-113. PDF
• Emery, C. 1896j. Saggio di un catalogo sistematico dei generi Camponotus, Polyrhachis e affini. Memorie della Reale Accademia delle Scienze dell'Istituto di Bologna (5)5:363-382 [pagination of separate: 761-780]. PDF
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183:1-302. PDF
• Forel, A. 1886d. Indian ants of the Indian Museum, Calcutta, No. 2. Journal of the Asiatic Society of Bengal. Part II. Natural Science 55:239-249. PDF
• Forel, A. 1893e. Les Formicides de l'Empire des Indes et de Ceylan. Part III. Journal of the Bombay Natural History Society 8:17-36. PDF
• Karavaiev, V. 1935a. Neue Ameisen aus dem Indo-Australischen Gebiet, nebst Revision einiger Formen. Treubia 15:57-118. PDF
• Mayr, G. 1863a. Formicidarum index synonymicus. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 13:385-460. PDF
• Mayr, G. 1872. Formicidae Borneenses collectae a J. Doria et O. Beccari in territorio Sarawak annis 1865-1867. Annali del Museo Civico di Storia Naturale 2:133-155. PDF
• Mayr, G. 1886c. Notizen über die Formiciden-Sammlung des British Museum in London. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 36:353-368. PDF
• Roger, J. 1863b. Verzeichniss der Formiciden-Gattungen und Arten. Berliner Entomologische Zeitschrift 7(Beilage):1-65. PDF
• Smith, F. 1857a. Catalogue of the hymenopterous insects collected at Sarawak, Borneo; Mount Ophir, Malacca; and at Singapore, by A. R. Wallace. [part]. Journal and Proceedings of the Linnean Society of London. Zoology 2:42-88. PDF
• Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. PDF
• Wang, W. Y.; Soh, E. J. Y.; Yong, G. W. J.; Wong, M. K. L.; Guénard, B.; Economo, E. P.; Yamane, S. 2022. Remarkable diversity in a little red dot: a comprehensive checklist of known ant species in Singapore (Hymenoptera: Formicidae) with notes on ecology and taxonomy. Asian Myrmecology 15: e015006:1-152. [online early] 10.20362/am.015006 PDF
• Wheeler, W. M. 1919f. The ants of Borneo. Bulletin of the Museum of Comparative Zoology 63:43-147. PDF