Rajmohana, K.; Sudheer, K.; Girish Kumar, P.; Santhosh, S. (eds.) 2004. Perspectives on biosystematics and biodiversity. Prof. T.C. Narendran commemoration volume. Kerala: Systematic Entomology Research Scholars Association, xxii + 666 pp.
Ramage, T. 2014. Les fourmis de Polynésie française (Hymenoptera, Formicidae). Bulletin de la Société Entomologique de France 119 (2):145-176. PDF
Ramdas Menon, M. G.; Punjabi, G. M. 1961 ("1960"). Some observations and new records of ants from Delhi. Indian Journal of Entomology 22:133-135.
Ramos, J. A. 1946. The insects of Mona Island (West Indies). Journal of Agriculture of the University of Puerto Rico 30:1-74. PDF
Ran, H.; Zhou, S. 2011. Checklist of Chinese ants: the formicomorph subfamilies. Journal of Guangxi Normal University, Natural Science Edition 29 (3):65-73.
Randuska, P. 1995. Formikofauna SPR Boky. Entomofauna Carpathica 7:20-26.
Rangel Ch., J. O. (ed.) 1994. Ucumarí. Un caso típico de la diversidad biótica andina. Pereira, Colombia: CARDER (Corporación Autónoma Regional de Risaralda), 451 pp.
Raqué, K.-F. 1994. Die Ameisenfauna der Sandhausener Dünen. Beihefte zu den Veröffentlichungen für Naturschutz und Landschaftspflege in Baden-Württemberg 80:241-254.

Notes: Not seen. Cited in Zoological Record, volume 132.

Räsänen, V. 1915. Stridulationsapparate bei Ameisen besonders bei Formicidae. Acta Societatis pro Fauna et Flora Fennica 40(8):1-19.