Fig. 2

The Bayesian inference tree for Diptychus maculatus based on the 70 haplotypes from combined mtDNA. Numbers on branches indicate, posterior probability in BI analyses followed by bootstrap supports for ML the node. The corresponding median-joining network based on the combined sequence data for each clade is depicted to the right of each clade. The haplotype numbers correspond to those in the Additional file 2: Table S1. The circle sizes represent the approximate numbers of individuals, and the scale is provided in the lower right corner. The black dots indicate the nucleotide substitutions inferred for that branch. The geographical origins of the haplotypes are illustrated by the same colors used Fig. 1