FIGURE 137 in A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae)

FIGURE 137. Separation of nest samples of Cardiocondyla bulgarica (black bars) from a combined cluster of C. sahlbergi and C. persiana (red bars) by NC-Ward, NC-part.hclust, NC-part.kmeans, NC-NMDS.kmeans clustering and a principal component analysis. The white bar indicates an outlier in NC-part.hclust. The mean classification error of the four exploratory data analyses relative to the controlling linear discriminant analysis is 0.45%. All 17 available NUMOBAT characters were processed without character selection.