Figure 2. Phylogenetic tree of mtDNA ND2 haplotypes (left) and the species tree based on ND2 sequences (right).

Palearctic clades are identified by subspecific names. Nearctic clades are identified by letters (A - E) due to overlap of their ranges. Numbers next to branches show their posterior probability. Gray bars next to nodes indicate their 95% HPD interval for the node age. Scale below each tree indicates time in million years (Ma).