Figure 2 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

Figure 2 Three exploratory and a hypothesis-driven data analysis using nest centroids (NC) as input data. Evaluated were 21 nest samples of Formicaexsecta containing only Rubens morph workers (grey bars right) and 14 nest samples of F.fennica (textured grey bars left). The classifications of NC-Ward and NC-part.kmeans coincide completey whereas NC-part.hclust is also in general agreement but exposes two outlier samples (black bar).