FIGURE 3. (a) Phylogenetic tree of Polydora websteri inferred from Cyt b sequences with Boccardia proboscidea and Polydora onagawaensis serving as the outgroup taxa. Maximum likelihood bootstrap support ≥ 97 % is given above every branch and the Bayesian support ≥ 97 % given below the branch. (b) Phylogenetic tree of Polydora websteri inferred from 18S rRNA sequences. (c) Cyt b haplotype network of P. websteri from South Africa, Namibia, Australia and China. Each region is represented by a different colour as in (a), circle sizes are proportional to number of sequences in each haplotype (Hap), lines perpendicular to the connecting lines indicate mutation differences and black dots indicate missing haplotypes. (d) 18S rRNA haplotype network of P. websteri from South Africa, Namibia, Australia, China and Japan. Each region is represented by a different colour as in (b). Sequences generated in this study are shown in bold, asterisk (*) indicates specimens previously identified as Polydora cf. websteri.