Fig. 1

Evolutionary relationships of Hypogeophis rostratus inferred from cytb data: a) Bayesian inference majority rule consensus tree. BI posterior probabilities > 0.5 are presented on the branches; b) Median-Joining haplotype network. Size of the haplotypes are indicative of number of individuals in the haplotype. Small black circles refer to mutational steps between haplotypes and open circles represent extinct or unsampled haplotypes. a & b) Colors on tips of the BI tree and within the haplotypes refer to sample island of origin as referred to in the key (and are the same as those used in Fig. 2). Depicted image of H. rostratus is from Mahé