• Irenea in Dolichoderinae, Dolichoderini: Donisthorpe, 1938h: 502; Donisthorpe, 1943g: 653; Chapman & Capco, 1951: 186.
• Irenea as subgenus of Dolichoderus: Donisthorpe, 1938h: 502.
• Irenea as genus: Donisthorpe, 1941h: 59; Donisthorpe, 1943g: 653; Chapman & Capco, 1951: 186.
• Polyrhachis (Irenea) as junior synonym of Polyrhachis (Myrmatopa): Bolton, 1994: 50; Bolton, 1995b: 32; Dorow, 1995: 42; Bolton, 2003: 124.

Obsolete classifications

• Irenea

Citations

• Bolton, B. 1994. Identification guide to the ant genera of the world. Cambridge, Mass.: Harvard University Press, 222 pp.
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Bolton, B. 2003. Synopsis and classification of Formicidae. Memoirs of the American Entomological Institute 71:1-370. PDF
• 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
• Donisthorpe, H. 1938h. New species of ants and a new subgenus of Dolichoderus from various localities. Annals and Magazine of Natural History (11)2:498-504. PDF
• Donisthorpe, H. 1941h. The ants of Japen Island, Dutch New Guinea (Hym., Formicidae). Transactions of the Royal Entomological Society of London 91:51-64. PDF
• Donisthorpe, H. 1943g. A list of the type-species of the genera and subgenera of the Formicidae. [part]. Annals and Magazine of Natural History (11)10:617-688.
• 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