Dendrogram comparing the results of “kmeans”, and “hclust” in NC Clustering using UPGMA distance method of Solenopsis workers’ morphometric raw data. Ocher bars: S. fugax, blue bars: S. juliae. The type material of S. juliae was not available for measurements, not shown. Black bar represents the S. cypridis samples as outgroup. Data input: raw data within the character system of SC. The cypridis cluster (black bars) was assigned as outlier in ‘hclust’ but ‘kmeans’ assigned it in the fugax cluster. Note: four workers mounted on different pins (3 and 1 workers respectively) of the S. cypridis syntype material appear separately in the tree.