Ronchetti, G. 1980. Distribution des fourmis du groupe Formica rufa en Europe (5 cartes). Deuxième édition. Pavia: Istituto di Entomologia dell'Università di Pavia, 5 maps.

Ronchetti, G. 1981. Distribuzione delle formiche del gruppo Formica rufa in Europa. Collana Verde 59:225-236.

Roncin, E. 2002. Two new Tetramorium species (Hymenoptera: Formicidae) from Vietnam with a discussion of the mixtum, tonganum, and scabrosum groups. Sociobiology 40:281-292. PDF

Roncin, E.; Deharveng, L. 2003. Leptogenys khammouanensis sp. nov. (Hymenoptera: Formicidae). A possible troglobitic species of Laos, with a discussion on cave ants. Zoological Science (Tokyo) 20:919-924. PDF

Ronquist, F.; Rasnitsyn, A. P.; Roy, A.; Eriksson, K.; Lindgren, M. 1999. Phylogeny of the Hymenoptera: a cladistic reanalysis of Rasnitysn's (1988) data. Zoologica Scripta 28:13-50. PDF

Room, P. M. 1971. The relative distributions of ant species in Ghana's cocoa farms. Journal of Animal Ecology 40:735-751.

Room, P. M. 1975. Diversity and organization of the ground foraging ant faunas of forest, grassland and tree crops in Papua New Guinea. Australian Journal of Zoology 23:71-89.

Roonwal, M. L. 1976. Plant-pest status of root-eating ant, Dorylus orientalis, with notes on taxonomy, distribution and habits (Insecta: Hymenoptera). Journal of the Bombay Natural History Society 72:305-313.

Roques, L.; Torossian, C. 1976 ("1975"). Étude par microscopie électronique à balayage de la morphologie céphalique des ouvrières de fourmis du groupe Formica rufa. Bulletin de la Société d'Histoire Naturelle de Toulouse 111:322-336.

Roques, L.; Torossian, C. 1977 ("1976"). Étude par microscopie électronique à balayage de la morphologie du thorax des ouvrières de fourmis du groupe Formica rufa. (2e note.). Bulletin de la Société d'Histoire Naturelle de Toulouse 112:314-326.

Ros, J.; Olivella, I.; Gili, J. M. (eds.) 1984. Els sistemes naturals de les illes Medes. Arxius de la Secció de Ciències, LXXIII. Barcelona: Institut d'Estudis Catalana, 828 pp.

Rosciszewski, K. 1994. Rostromyrmex, a new genus of myrmicine ants from peninsular Malaysia (Hymenoptera: Formicidae). Entomologica Scandinavica 25:159-168. PDF

Rosciszewski, K.; Maschwitz, U. 1994. Prey specialization of army ants of the genus Aenictus in Malaysia. Andrias 13:179-187.

Rosenblatt, J. S.; Hinde, R. A.; Beer, C.; Busnel, M.-C. (eds.) 1978. Advances in the study of behavior. Volume 8. New York: Academic Press, xiv + 261 pp.

Rosengren, M.; Rosengren, R.; Soderlund, V. 1980. Chromosome numbers in the genus Formica with special reference to the taxonomical position of Formica uralensis Ruzsk. and Formica truncorum Fabr. Hereditas (Lund) 92:321-326. PDF

Rosengren, R.; Chautems, D.; Cherix, D.; Fortelius, W.; Keller, L. 1994. Separation of two sympatric sibling species of Formica L. ants by a behavioural choice test based on brood discrimination. Memorabilia Zoologica 48:237-249. PDF

Rosengren, R.; Cherix, D. 1981. The pupa-carrying test as a taxonomic tool in the Formica rufa group. Pp. 263-281 in: Howse, P. E.; Clement, J.-L. (eds.) 1981. Biosystematics of social insects. Systematics Association Special Volume No. 19. London: Academic Press, 346 pp. PDF

Rosengren, R.; Cherix, D.; Pamilo, P. 1986. Insular ecology of the red wood ant Formica truncorum Fabr. II. Distribution, reproductive strategy and competition. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 59:63-94.

Rosengren, R.; Cherix, D.; Poutanen, R. 1981. The pupa-carrying test as a taxonomic tool in the Formica rufa group. Memoranda Societatis pro Fauna et Flora Fennica 57:14.

Rosengren, R.; Pamilo, P. 1983. The evolution of polygyny and polydomy in mound-building Formica ants. Acta Entomologica Fennica 42:65-77.

Rosengren, R.; Pamilo, P. 1984. The interrelationship between mating behaviour, sex ratio and queen number in Formica. [Abstract.]. P. 517 in: XVII International Congress of Entomology 1984. Abstract Volume. Hamburg, Federal Republic of Germany, August 20-26, 1984. Hamburg: XVII International Congress of Entomology, 960 pp.

Rosengren, R.; Vepsäläinen, K.; Wuorenrinne, H. 1979. Distribution, nest densities and ecological significance of wood ants (the Formica rufa group) in Finland. Bulletin SROP [Section Regional Ouest Paléarctique, Organisation Internationale de Lutte Biologique] 1979(II-3):181-213.

Rosengren, R.; Vepsäläinen, K.; Wuorenrinne, H. 1981. Distribuzione, densità delle colonie ed importanza ecologica delle formiche del gruppo Formica rufa in Finlandia. Collana Verde 59:237-259.

Ross, E. S. 1954. [Review of: Cook, T. W. 1953. The ants of California. Palo Alto: Pacific Books, 462 pp.]. Pan-Pacific Entomologist 30:14.

Ross, H. H.; Rotramel, G. L.; La Berge, W. E. 1971. A synopsis of common and economic Illinois ants, with keys to the genera (Hymenoptera, Formicidae). Illinois Natural History Survey. Biological Notes 71:1-22.

Ross, K. G. 1992. Strong selection on a gene that influences reproductive competition in a social insect. Nature (London) 355:347-349.

Ross, K. G. 1997. Multilocus selection in fire ants: effects of selection, gene flow and recombination. Genetics 145:961-974.

Ross, K. G.; Carpenter, J. M. 1991. Phylogenetic analysis and the evolution of queen number in eusocial Hymenoptera. Journal of Evolutionary Biology 4:117-130.

Ross, K. G.; Fletcher, D. J. C. 1985a. Genetic origin of male diploidy in the fire ant, Solenopsis invicta (Hymenoptera: Formicidae), and its evolutionary significance. Evolution 39:888-903.

Ross, K. G.; Fletcher, D. J. C. 1985b. Comparative study of genetic and social structure in two forms of the fire ant Solenopsis invicta (Hymenoptera: Formicidae). Behavioral Ecology and Sociobiology 17:349-356.