Reznikova, Z. I.; Samoshilova, N. M. 1981a. The role of ants as predators in steppe biocenoses. [In Russian.]. Ekologiya (Moscow) 12(1):69-75.

Notes: Date signed for printing ("podpisano k pechati"). Translated in Sov. J. Ecol. 12:55-60. See Reznikova & Samoshilova (1981b).

Reznikova, Z. I.; Samoshilova, N. M. 1981b. The role of ants as predators in steppe biocenoses. Soviet Journal of Ecology 12:55-60.

Notes: English translation of Reznikova & Samoshilova (1981a).

Reznikova, Z. I.; Shillerova, O. A. 1979. Ecology and behavior of Formica uralensis in the dry steppes of Tuva. [In Russian.]. Voprosy Ekologii. Novosibirskii Gosudarstvennyi Universitet 5:112-131.
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Rice, H. M. A. 1947. Geology and mineral deposits of the Princeton map-area, British Columbia. Geological Survey of Canada. Memoirs 243:1-136.

Notes: Page 31: ants (Formicidae; not further identified), as fossils in Princeton sediments of Eocene or Oligocene age.

Richards, O. W. 1935. Notes on the nomenclature of the Aculeate Hymenoptera, with special reference to the British genera and species. Transactions of the Entomological Society of London 83:143-176.
Richards, O. W. 1956. Hymenoptera. Introduction and key to families. Handbooks for the Identification of British Insects 6(1):1-94.
Richards, O. W. 1959. Lasius brunneus (Latr.) (Hym., Formicidae) and other ants, in Buckinghamshire. Entomologist's Monthly Magazine 95:83.
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.
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Richardson, J.; Gray, J. E. (eds.) 1874. The zoology of the voyage of H.M.S. Erebus & Terror, under the command of Captain Sir James Clark Ross, R.N., F.R.S., during the years 1839 to 1843. Vol. 2 [part]. London: E. W. Janson, pp. 25-51, pl. 7-10.
Richter, A.; Boudinot, B. E.; Hita Garcia, F.; Billen, J.; Economo, E. P.; Beutel, R. G. 2023. Wonderfully weird: the head anatomy of the armadillo ant, Tatuidris tatusia (Hymenoptera: Formicidae: Agroecomyrmecinae), with evolutionary implications. Myrmecological News 33:35-75. 10.25849/myrmecol.news_033:035 PDF
Richter, A.; Boudinot, B.; Yamamoto, S.; Katzke, J.; Beutel, R. G. 2022. The first reconstruction of the head anatomy of a Cretaceous insect, †Gerontoformica gracilis (Hymenoptera: Formicidae), and the early evolution of ants. Insect Systematics and Diversity 6(5), 4:1-80. 10.1093/isd/ixac013 PDF
Richter, A.; Hita Garcia, F.; Keller, R. A.; Billen, J.; Economo, E. P.; Beutel, R. G. 2020. Comparative analysis of worker head anatomy of Formica and Brachyponera (Hymenoptera: Formicidae). Arthropod Systematics and Phylogeny 78:133-170. 10.26049/ASP78-1-2020-06 PDF
Richter, A.; Hita Garcia, F.; Keller, R. A.; Billen, J.; Katzke, J.; Boudinot, B. E.; Economo, E. P.; Beutel, R. G. 2021. The head anatomy of Protanilla lini (Hymenoptera: Formicidae: Leptanillinae), with a hypothesis of their mandibular movement. Myrmecological News 31:85-114. 10.25849/myrmecol.news_031:85 PDF

Notes: Head anatomy, Protanilla

Richter, A.; Keller, R. A.; Rosumek, F. B.; Economo, E. P.; Hita Garcia, F.; Beutel, R. G. 2019. The cephalic anatomy of workers of the ant species Wasmannia affinis (Formicidae, Hymenoptera, Insecta) and its evolutionary implications. Arthropod Structure & Development 49:26-49. 10.1016/j.asd.2019-02-002 PDF

Notes: Cranial anatomy of Formicidae, with Wasmannia as exemplar.

Ride, W. D. L.; Taylor, R. W. 1973. Formica maxima Moore, 1842 (Insecta, Hymenoptera): proposed suppression under the plenary powers in accordance with article 23(a-b). Z.N.(S.)2023. Bulletin of Zoological Nomenclature 30:58-60. PDF
Riemann, H. 1987a. Bienen, Wespen und Ameisen (Hymenoptera Aculeata) als Besiedler von Böschungen an tiefliegenden Entwässerungsgräben. Abhandlungen herausgegeben vom Naturwissenschaftlichen Verein zu Bremen 40:333-346.
Riemann, H. 1987b. Die Bienen, Wespen und Ameisen (Hymenoptera Aculeata) der Naturschutzgebiete "Dünengebiet bei Neumühlen" und "Vossberge" unter Berücksichtigung weiterer Binnendünenareale. Beihefte zur Schriftenreihe Naturschutz und Landschaftspflege in Niedersachsen 17:1-79.
Riemann, H. 1988. Beitrag zur Stechimmenfauna niedersächsischer Sandgruben (Hymenoptera: Aculeata). Braunschweiger Naturkundliche Schriften 3:213-242.
Riemann, H. 1995. Zur Stechimmenfauna des Bremer Bürgerparks (Hymenoptera: Aculeata). Abhandlungen herausgegeben vom Naturwissenschaftlichen Verein zu Bremen 43:45-72.
Rigato, F. 1994a. Dacatria templaris gen. n., sp. n. A new myrmicine ant from the Republic of Korea. Deutsche Entomologische Zeitschrift (N.F.)41:155-162. PDF
Rigato, F. 1994b. Revision of the myrmicine ant genus Lophomyrmex, with a review of its taxonomic position (Hymenoptera: Formicidae). Systematic Entomology 19:47-60. PDF
Rigato, F. 1999. Myrmecina melonii n. sp., a new ant from Sardinia, with a review of the West Palaearctic Myrmecina (Hymenoptera Formicidae). Bollettino della Società Entomologica Italiana 131:83-92. PDF
Rigato, F. 2002. Three new Afrotropical Cardiocondyla Emery, with a revised key to the workers (Hymenoptera Formicidae). Bollettino della Società Entomologica Italiana 134:167-173. PDF
Rigato, F. 2006. Two new Strumigenys from Ethiopia (Hymenoptera, Formicidae). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 147:103-111. PDF
Rigato, F. 2011. Contributions to the taxonomy of West European and North African Stenamma of the westwoodii species-group. (Hymenoptera Formicidae). Memorie della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 37:1-56. PDF
Rigato, F. 2016. The ant genus Polyrhachis F. Smith in sub-Saharan Africa, with descriptions of ten new species. (Hymenoptera: Formicidae). Zootaxa 4088:1-50. 10.11646/zootaxa.4088.1.1 PDF