A taxonomic revision of the Formica rufibarbis Fabricius, 1793 group (Hymenoptera: Formicidae). Author Seifert, B. Author Schultz, R. text Myrmecologische Nachrichten 2009 12 255 272 http://antbase.org/ants/publications/22836/22836.pdf journal article 22836 99C2E25D-E906-478D-B85B-27C3F22BFFF1 Formica rufibarbis volgensis Ruzsky, 1914 ; Volga River .