Rodriguez, J. 2008. Género Odontomachus Latreille. Pp. 148-170 in: Jiménez, E.; Fernández, F.; Arias, T.M.; Lozano-Zambrano, F. H. (eds.) 2008. Sistemática, biogeografía y conservación de las hormigas cazadoras de Colombia. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xiv + 609 pp. PDF
Robertson, H. G. 1990. Unravelling the Camponotus fulvopilosus species complex (Hymenoptera: Formicidae). Pp. 327-328 in: Veeresh, G. K.; Mallik, B.; Viraktamath, C. A. (eds.) 1990. Social insects and the environment. Proceedings of the 11th International Congress of IUSSI, 1990. New Delhi: Oxford & IBH Publishing Co., xxxi + 765 pp.
Robertson, H. G. 1999. Ants (Hymenoptera: Formicidae) of Mkomazi. Pp. 321-336 in: Coe, M. J.; McWilliam, N. C.; Stone, G. N.; Packer, M. J. (eds.) 1999. Mkomazi: the ecology, biodiversity and conservation of a Tanzanian savanna. London: Royal Geographical Society (with The Institute of British Geographers), 608 pp.
Robertson, H. G. 2000b. Formicidae (Hymenoptera: Vespoidea). Pp. 371-382 in: Kirk-Spriggs, A. H.; Marais, E. (eds.) 2000. Dâures - biodiversity of the Brandberg Massif, Namibia. Cimbebasia Memoir 9. Windhoek: National Museum of Namibia, 389 pp.
Rissing, S. W.; Pollock, G. B. 1988. Pleometrosis and polygyny in ants. Pp. 179-222 in: Jeanne, R. L. (ed.) 1988. Interindividual behavioral variability in social insects. Boulder: Westview Press, ix + 456 pp.
Rilta, J. S.; Dhadwal, T.; Bharti, H. 2023. [Untitled. Vollenhovia taylori sp. nov. and Vollenhovia terayamai sp. nov. attributed to J.S. Rilta, T. Dhadwal and H. Bharti.]. Pp. 5-6 in: Dhadwal, T.; Rilta, J. S.; Bharti, H. 2023. Taxonomic studies on the genus Vollenhovia Mayr, 1865 (Hymenoptera: Formicidae): five new species from India. Sociobiology 70 (3): e9103:8 pp. [online early]. PDF
Rigato, S.; Toni, I. 2011. Short notes 21. Hymenoptera, Formicidae. Pp. 873-882 in: Nardi, G.; Whitmore, D.; Bardiani, M.; Birtele, D.; Mason, F.; Spada, L.; Cerretti, P. (eds.) 2011. Biodiversity of Marganai and Montimannu (Sardinia). Research in the framework of the ICP Forests network. Conservazione Habitat Invertebrati, 5. Sommacampagna, Verona: Cierre Edizioni, 896 pp. PDF
Richards, O. W. 1971. The thoracic spiracles and some associated structures in the Hymenoptera and their significance in classification, especially of the Aculeata. Pp. 1-13 in: Asahina, S. , et al. (eds.) 1971. Entomological essays to commemorate the retirement of Professor K. Yasumatsu. Tokyo: Hokuryukan Publishing Co., vi + 389 pp.
Reyes, J. L.; Rodriguez, A. 1987. [Untitled. Goniomma baeticum, Reyes y Rodríguez, nov. sp.]. Pp. 269-272 in: Reyes, J. L.; Espadaler, X.; Rodriguez, A. 1987. Descripción de Goniomma baeticum nov. sp. (Hym., Formicidae). EOS. Revista Española de Entomología 63:269-276. PDF
Rettenmeyer, C. W.; Chadab-Crepet, R.; Naumann, M. G.; Morales, L. 1983. Comparative foraging by neotropical army ants. Pp. 59-73 in: Jaisson, P. (ed.) 1983. Social insects in the tropics. Volume 2. Paris: Université Paris-Nord, 252 pp.
Rettenmeyer, C. W. 1974. Description of the queen and male with some biological notes on the army ant, Eciton rapax. Pp. 291-302 in: Beard, R. L. (ed.) 1974. Connecticut Entomological Society 25th Anniversary Memoirs. New Haven: Connecticut Entomological Society, 322 pp.
Rettenmeyer, C. W. 1983. Checklist of army ants (arrieras) (Formicidae: Ecitoninae). P. 650 in: Janzen, D. H. (ed.) 1983. Costa Rican natural history. Chicago: University of Chicago Press, xi + 816 pp.
Ren, Z.-Y. et al. (eds.) 2002. Animal science. In: Ren, Z.-Y. et al. (eds.) 2002. Animal Science. In celebration of Professor Zhemin's 70th birthday and 50 years of teaching. [In Chinese.]. Xi'an: Shanxi Normal University Press, 433 pp.
Reimer, N.; Beardsley, J. W.; Jahn, G. 1990. Pest ants in the Hawaiian islands. Pp. 40-50 in: Vander Meer, R. K.; Jaffe, K.; Cedeno, A. (eds.) 1990. Applied myrmecology: a world perspective. Boulder: Westview Press, xv + 741 pp.
Reimer, N. J. 1994. Distribution and impact of alien ants in vulnerable Hawaiian ecosystems. Pp. 11-22 in: Williams, D. F. (ed.) 1994. Exotic ants. Biology, impact, and control of introduced species. Boulder: Westview Press, xvii + 332 pp.
Reichel, H. 1998. Systematics and evolution of the ant genus Rhytidoponera (Ponerinae). [Abstract.]. P. 390 in: Schwarz, M. P.; Hogendoorn, K. (eds.) 1998. Social insects at the turn of the millennium. Proceedings of the XIII International Congress of IUSSI. Adelaide, Australia. 29 December 1998 - 3 January 1999. Adelaide: XIII Congress of IUSSI, 535 pp.
Rasnitsyn, A. P. 2002. Superorder Vespidea Laicharting, 1781. Order Hymenoptera Linné, 1758 (=Vespida Laicharting, 1781). Pp. 242-254 in: Rasnitsyn, A. P.; Quicke, D. L. J. (eds.) 2002. History of insects. Dordrecht: Kluwer, 517 pp.
Ramos-Elorduy de Conconi, J.; MacGregor Loaeza, R.; Cuadriello Aguilar, J.; Sampedro Rosas, G. 1983. Quelques données sur la biologie des fourmis Liometopum (Dolichoderinae) du Mexique et en particulier sur leurs rapports avec les homoptères. Pp. 125-130 in: Jaisson, P. (ed.) 1983. Social insects in the tropics. Volume 2. Paris: Université Paris-Nord, 252 pp.
Ramage, T. 2019. [New species Leptogenys loarelae attributed to T. Ramage]. Pp. 4-6 in: Ramage, T.; Jouault, C.; Schmidt, A. R.; Seyfullah, L. J.; Perrichot, V. 2019. Two new ant species (Formicidae: Dorylinae, Ponerinae) from New Caledonia. European Journal of Taxonomy 589:1-14. 10.5852/ejt.2019.589 PDF
Rajan, P. D.; Zacharias, M.; Mustak Ali, T. M. 2006. Insecta: Hymenoptera: Formicidae. Pp. 153-188 in: Director; Zoological Survey of India (ed.) 2006. Fauna of Biligiri Rangaswamy Temple Wildlife Sanctuary (Karnataka). [Conservation Area Series, 27.]. Kolkata: Zoological Survey of India, iv + 263 pp.
Raignier, A.; Boven, J. K. A. 1974. Der Polymorphismus der afrikanischen Wanderameisen unter biometrischen und biologischen Gesichtspunkten. Pp. 668-693 in: Schmidt, G. H. (ed.) 1974. Sozialpolymorphismus bei Insekten. Probleme der Kastenbildung im Tierreich. Stuttgart: Wissenschaftliche Verlagsgesellschaft mbH, xxiv + 974 pp.
Radchenko, A.; Zhou, S.; Elmes, G. W. 2008. [Untitled. Myrmica curiosa Radchenko, Zhou et Elmes, sp. nov.]. Pp. 769-770 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Zhou, S. 2008. [Untitled. Myrmica weii Radchenko et Zhou, sp. nov.]. Pp. 779-781 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Rigato, F. 2008a. [Untitled. Myrmica poldii Radchenko et Rigato, sp. nov.]. Pp. 776-777 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Rigato, F. 2008b. [Untitled. Myrmica polyglypta Radchenko et Rigato, sp. nov.]. Pp. 781-783 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Rigato, F. 2009. Myrmica varisculpta Radchenko et Rigato sp. nov. P. 76 in: Radchenko, A.; Elmes, G. W. 2009a. Taxonomic revision of the pachei species-group of the genus Myrmica Latreille (Hymenoptera: Formicidae). Annales Zoologici (Warsaw) 59:67-92. PDF
Radchenko, A.; Elmes, G. W. 2008a. [Untitled. Myrmica mixta Radchenko et Elmes, sp. nov.]. Pp. 770-773 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Elmes, G. W. 2008b. [Untitled. Myrmica pararitae Radchenko et Elmes, sp. nov.]. Pp. 773-776 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A.; Elmes, G. W. 2008c. [Untitled. Myrmica sinoschencki Radchenko et Elmes, sp. nov.]. Pp. 778-779 in: Radchenko, A. G.; Zhou, S.; Elmes, G. W.; Rigato, F. 2008. Seven new Myrmica species (Hymenoptera: Formicidae) from China. Annales Zoologici (Warsaw) 58:767-784. PDF
Radchenko, A. G.; Yusupov, Z. 2015. Temnothorax tembotovi Radchenko & Yusupov, n. sp. Pp. 166 in: Radchenko, A. G.; Yusupov, Z. M.; Fedoseeva, E. B. 2015. Taxonomic notes for some Caucasian Temnothorax Mayr, 1861 species, with descriptions of three new species. Caucasian Entomological Bulletin 11 (1):161-167. PDF