<ref name="Francoeur_1977">{{cite journal |first1=A. |last1=Francoeur |year=1977 |title=The taxonomic status and biogeographic significance of the Sumatran ''Formica'' (Formicidae, Hymenoptera) |url=https://antcat.org/documents/1506/4956.pdf |journal=Psyche (Cambridge) |publisher= |volume=84 |issue= |pages=11–12 |doi= }}</ref>