Mitochondrial DNA
Using the COI mtDNA alignment, we examined haplotype diversity and calculated basic genetic polymorphism statistics and across regions and within regions using DNAsp v6 (Rozas et al., 2017). We then reconstructed a haplotype network for the COI data (n = 87; combined samples from Seal et al. (2015) and new sequences directly from this study) using the TCS method (Clement, Posada, & Crandall, 2000) in PopArt v1.7 (Leigh & Bryant, 2015).