Phylogenetic tree after Maximum Likelihood analyses on a concatenated dataset of cox1, 16S rDNA, ITS2, and 28S rDNA (as in Nygren et al. 2018). Bootstrap support values above nodes. Coloured squares indicate the major clades referred herein as Groups A–D. Within Group A, the focus of present study, subgroups A1–A4 and species 6–13, 18–21, 23, 28 are labelled.