ML tree of the Aegista species, based on the concatenated data (1680 bp) of the COI and ITS DNA markers. Each OTU label represents a species name. Numbers at nodes represent Bayesian posterior probabilities (right) and Maximum Likelihood ultrafast bootstrap support values (left). Only Bayesian posterior probabilities ≥ 0.95 and bootstrap support values ≥ 90% are shown. Scale bar indicates 0.07 substitutions per site. Arrow heads indicate clades and subclades. Blue shadows mark the Korean Aegista species. Black bars represent putative species suggested by the species delimitation analyses.