Figure 1 from: 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(1): 55-61. https://doi.org/10.3897/dez.66.34868 - Seifert, Bernhard (2019)