• Combination in Monomorium (Syllophopsis): Santschi, 1915c: 260.
• Combination in Monomorium: Bolton, 1987: 423.
• Combination in Syllophopsis: Ward et al., 2015: 73.
• Status as species: Santschi, 1915c: 260; Arnold, 1916: 214; Santschi, 1921c: 120 (in key); Emery, 1922c: 175; Wheeler, 1922: 867; Arnold, 1952a: 464; Ettershank, 1966: 101; Bolton, 1987: 423 (redescription); Bolton, 1995b: 264; Heterick, 2006: 177 (redescription); Hita Garcia et al., 2013: 213; Sharaf & Aldawood, 2013a: 81 (in key).
• Senior synonym of Syllophopsis modesta boerorum: Bolton, 1987: 423; Heterick, 2006: 177.
• Senior synonym of Syllophopsis modesta smutsi: Bolton, 1987: 423; Bolton, 1995b: 264; Heterick, 2006: 177.
• Senior synonym of Syllophopsis transwaalensis: Bolton, 1987: 423; Bolton, 1995b: 264; Heterick, 2006: 177.

Junior synonyms

• Syllophopsis modesta smutsi (Wheeler, 1922)
  Obsolete combination(s): Monomorium modestum smutsi
• Syllophopsis transwaalensis (Emery, 1922)
  Obsolete combination(s): Monomorium modestum transwaalense

Obsolete combinations

• Monomorium modestum

Citations

• Arnold, G. 1916. A monograph of the Formicidae of South Africa. Part II. Ponerinae, Dorylinae. Annals of the South African Museum 14:159-270. PDF
• Arnold, G. 1952a. New species of African Hymenoptera. No. 10. Occasional Papers of the National Museum of Southern Rhodesia 2:460-493. PDF
• Bolton, B. 1987. A review of the Solenopsis genus-group and revision of Afrotropical Monomorium Mayr (Hymenoptera: Formicidae). Bulletin of the British Museum (Natural History). Entomology 54:263-452. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B:95-206. PDF
• Ettershank, G. 1966. A generic revision of the world Myrmicinae related to Solenopsis and Pheidologeton (Hymenoptera: Formicidae). Australian Journal of Zoology 14:73-171. PDF
• Heterick, B. 2006. A revision of the Malagasy ants belonging to genus Monomorium Mayr, 1855 (Hymenoptera: Formicidae). Proceedings of the California Academy of Sciences (4)57:69-202. PDF
• Hita Garcia, F.; Wiesel, E.; Fischer, G. 2013. The ants of Kenya (Hymenoptera: Formicidae)—faunal overview, first species checklist, bibliography, accounts for all genera, and discussion on taxonomy and zoogeography. Journal of East African Natural History 101 (2):127-222. PDF
• Santschi, F. 1914e. Meddelanden från Göteborgs Musei Zoologiska Afdelning. 3. Fourmis du Natal et du Zoulouland récoltées par le Dr. I. Trägårdh. Göteborgs Kungliga Vetenskaps och Vitterhets Samhälles Handlingar 15:1-44.
• Santschi, F. 1915c. Nouvelles fourmis d'Afrique. Annales de la Société Entomologique de France 84:244-282. PDF
• Santschi, F. 1921c. Quelques nouveaux Formicides africains. Annales de la Société Entomologique de Belgique 61:113-122. PDF
• Sharaf, M. R.; Aldawood, A. S. 2013a. First occurrence of the Monomorium hildebrandti-group (Hymenoptera: Formicidae), in the Arabian Peninsula, with description of a new species M. kondratieffi n. sp. Proceedings of the Entomological Society of Washington 115 (1):75-84. 10.4289/0013-8797.115.1.75 PDF
• Ward, P. S.; Brady, S. G.; Fisher, B. L.; Schultz, T. R. 2015. The evolution of myrmicine ants: phylogeny and biogeography of a hyperdiverse ant clade (Hymenoptera: Formicidae). Systematic Entomology 40:61-81. 10.1111/syen.12090 PDF
• Wheeler, W. M. 1922. Ants of the American Museum Congo expedition. New York: Bulletin of the American Museum of Natural History, 1139.