• Combination in Pheidole: Donisthorpe, 1932b: 575
• Status as species: Mayr, 1863a: 414; Motschoulsky, 1863: 12; Smith, 1871a: 309; Dalla Torre, 1893: 194; Donisthorpe, 1932b: 575; Chapman & Capco, 1951: 199; Bolton, 1995b: 320; Dias et al., 2020: 81.

Obsolete combinations

• Formica diffidens

Citations

• 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
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Dias, R. K. S.; Guénard, B.; Akbar, S. A.; Economo, E. P.; Udayakantha, W. S.; Wachkoo, A. A. 2020. The ants (Hymenoptera, Formicidae) of Sri Lanka: a taxonomic research summary and updated checklist. ZooKeys 967:1-142. 10.3897/zookeys.967.54432 PDF
• Donisthorpe, H. 1932b. On the identity of some ants from Ceylon described by F. Walker. Annals and Magazine of Natural History (10)9:574-576. PDF
• Mayr, G. 1863a. Formicidarum index synonymicus. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 13:385-460. PDF
• Motschoulsky, V. de 1863. Essai d'un catalogue des insectes de l'île Ceylan (suite). Bulletin de la Société Impériale des Naturalistes de Moscou 36(3):1-153.
• Smith, F. 1871a. A catalogue of the Aculeate Hymenoptera and Ichneumonidae of India and the Eastern Archipelago. With introductory remarks by A. R. Wallace. [part]. Journal of the Linnean Society of London. Zoology 11:285-348. PDF
• Walker, F. 1859. Characters of some apparently undescribed Ceylon insects. [part]. Annals and Magazine of Natural History (3)4:370-376. PDF