Rotramel, G. L. 1967 ("1966"). The comparative morphology of the male genitalia of ants. [Abstract.]. Proceedings of the North Central Branch. Entomological Society of America 21:96.

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Ruano, F.; Tinaut, A. 1993. Estructura del nido de Cataglyphis floricola Tinaut, 1993. Estudio comparado con los hormigueros de C. iberica (Emery, 1906) y C. rosenhaueri (Emery, 1906) (Hymenoptera: Formicidae). Boletín de la Asociación Española de Entomologia 17:179-189.

Ruano, F.; Tinaut, A.; Soler, J. J. 2000. High surface temperatures select for individual foraging in ants. Behavioral Ecology 11:396-404.

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Ruíz-Cancino, E.; Coronado-Blanco, J. M. (eds.) 2012. Recursos Naturales. Mexico: Universidad Autónoma de Tamaulipas (Departamento de Fomenta Editorial de UAT), 290 pp. PDF

Rüppell, O.; Heinze, J. 1997. Polymorphismus der Königinnengrösse bei der amerikanischen Ameise Leptothorax rugatulus (Emery). Mitteilungen der Deutschen Gesellschaft für Allgemeine und Angewandte Entomologie 11:153-156.

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Ruzsky, M. 1895. Faunistic investigations in east Russia 1. Contribution to the ant fauna of east Russia. 2. Zoological excursion in the Orenburg region in 1894. [In Russian.]. Trudy Obshchestva Estestvoispytatelei pri Imperatorskom Kazanskom Universitete 28(5):1-32. PDF

Ruzsky, M. 1896. Verzeichniss der Ameisen des östlichen Russlands und des Uralgebirges. Berliner Entomologische Zeitschrift 41:67-74. PDF

Ruzsky, M. 1902a. Contribution to the ant fauna of the Turgai region. [In Russian.]. Russkoe Entomologicheskoe Obozrenie 2:232-235. PDF

Ruzsky, M. 1902b. Neue Ameisen aus Russland. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 17:469-484. PDF

Ruzsky, M. 1902c. The ants of the vicinity of the Aral Sea. [In Russian.]. Izvestiya Turkestanskago Otdela Imperatorskago Russkago Geograficheskago Obshchestva 3(1):1-24.

Notes: Summary in Zool. Zentralbl. 10:166 (10 March 1903).

Ruzsky, M. 1902d. Material on the ant fauna of the Caucasus and the Crimea. [In Russian.]. Protokoly Obshchestva Estestvoispytatelei pri Imperatorskom Kazanskom Universitete 206(suppl.):1-33. PDF

Ruzsky, M. 1902e. Formicidae. [In Russian.]. Pp. 15-16 in: Unknown 1902. Report on the recorded animal life of Moscow province (No. 4). [In Russian.]. Izvestiya Imperatorskago Obshchestva Lyubitelei Estestvoznaniya Antropologii i Etnografii pri Imperatorskom Moskovskom Universitete 98(4):6-18 [= Dnevnik' Zoologicheskago Otdeleniya Imperatorskago Obshchestva Lyubitelei Estestvoznaniya, Antropologii i Etnografii 3(4):6-18.]. PDF

Ruzsky, M. 1903a. A new species of ant from the Transcaspian region. [In Russian.]. Russkoe Entomologicheskoe Obozrenie 3:36-37. PDF

Ruzsky, M. 1903b. Essay on the myrmecofauna of the Kirghiz steppe. [In Russian.]. Trudy Russkago Entomologicheskago Obshchestva 36:294-316. PDF

Ruzsky, M. 1903c. Ants of the Transbaikalian region. [In Russian.]. Russkoe Entomologicheskoe Obozrenie 3:205-207. PDF

Ruzsky, M. 1904a. On ants from Archangel province. [In Russian.]. Zapiski Imperatorskago Russkago Geograficheskago Obshchestva po Obshchei Geografii 41:287-294. PDF

Ruzsky, M. 1904b. Ants of the Dzungarian Ala Tau. [In Russian.]. Izvestiya Imperatorskago Tomskago Universiteta 30(5th part):1-6.

Notes: Date on cover of volume 30 is 1908, but individual articles were evidently released earlier. Dating of Ruzsky's paper is based on citation in Ruzsky (1905). The paper was apparently intended for publication in volume 24 but does not appear there.

Ruzsky, M. 1905a. Über Tetramorium striativentre Mayr und Tetr. schneideri Emery. Zoologischer Anzeiger 29:517-518. PDF

Ruzsky, M. 1905b. The ants of Russia. (Formicariae Imperii Rossici). Systematics, geography and data on the biology of Russian ants. Part I. [In Russian.]. Trudy Obshchestva Estestvoispytatelei pri Imperatorskom Kazanskom Universitete 38(4-6):1-800.

Ruzsky, M. 1907a. List of ants from Minsk province, collected on the study trip of the Moscow student group. [In Russian.]. Trudy Studencheskago Kruzhka dlya Izsledovaniya Russkoi Prirody pri Imperatorskom Moskovskom Universitete 3:99-103.

Notes: Not seen. Cited in Ruzsky (1907c:123) and in the Zoological Record for 1907.

Ruzsky, M. 1907b. On the ant fauna of Vilna province. [In Russian.]. Trudy Studencheskago Kruzhka dlya Izsledovaniya Russkoi Prirody pri Imperatorskom Moskovskom Universitete 3:104-105.

Notes: Not seen. Cited in Ruzsky (1907c:123) and in the Zoological Record for 1907.