Phylogenetic analysis of Hirudinaria species and related taxa A bayesian inference tree based on 2533 bp alignment dataset of nuclear 28S rRNA and mitochondrial COI genes. Numbers at nodes indicate bootstrap values from maximum likelihood (ML) and bpp from Bayesian inference analysis (BI). Nodes with black circles are sufficiently supported by both BI and ML, while nodes with grey circles are supported only by ML B map showing the sampling locations for the specimens used for DNA sequence analysis.