Figure 2 in Inconvenient hyperdiversity - the traditional concept of "PheIdole pallIdula" includes four cryptic species (Hymenoptera: Formicidae)

Figure 2. Hierarchical NC-Ward clustering of 110 nest samples of major workers of the three European species of the Pheidole pallidula species complex considering all 17 morphometric characters unselectively. The arrows mark two samples of P. pallidula erroneously allocated to the P. balcanica et koshewnikovi cluster. The misplacement was rectified by a wild-card run of a controlling linear discriminant function which agreed with non-hierarchical NC-K-means clustering by 100 %.