Summary: | Fig. 28: Classification by three variants of NC-clustering of 225 nest samples of workers of Formica lugubris (black bars) and 76 nest samples of Formica pratensis (grey bars). The mean error of three analyses is 0.2%. Ten phenotypic characters were considered. The small, well separated sub-branch in the F. lugubris cluster represents Fennoscandian nest samples containing exclusively Hippie morph workers. Published as part of Seifert, Bernhard, 2021, A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants, pp. 133-179 in Myrmecological News 31 on page 162, DOI:10.25849/myrmecol.news_031:133, http://zenodo.org/record/5582216
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