Maximum likelihood tree (-In L 4923.702) of partial COI sequences. Sequences of Pinctada specimens generated in this study are highlighted in bold. Support values are bootstrap/posterior probabilities. Asterisks indicate bootstrap (ML) value of 100% and posterior probability (BI) value of 1.00. Values < 50% ML bootstrap and < 0.90 posterior probability are not shown. GenBank accession numbers are given in parentheses. After the registration number or species name. Results of three species delimitation methods, namely GMYC model (blue column), bPTP (red column) and ASAP (yellow column), are indicated at the right edge of the tree.