File:Seifert, B. 2019. The Rubens morph of Formica exsecta and its separation from Formica fennica.pdf

Summary
Seifert, B. 2019. The Rubens morph of Formica exsecta Nylander, 1846 and its separation from Formica fennica Seifert, 2000 (Hymenoptera, Formicidae). Deutsche Entomologische Zeitschrift 66: 55-61 (DOI 10.3897/dez.66.34868).