Table 3. Pairwise genetic divergence among the Tetraclita species in the West Indian Ocean and the two outgroups based on 12S.

	Tach	Truf	Tren	Tsp	Tehs	Tser1	Tser2	Tkuo	Tros
Tach	0.007
Truf	0.058	0.004
Tren	0.041	0.033	n.a.
Tsp	0.046	0.028	0.028	0.004
Tehs	0.096	0.083	0.071	0.088	0.002
Tser1	0.109	0.106	0.091	0.099	0.117	0.004
Tser2	0.113	0.114	0.094	0.112	0.115	0.044	0.003
Tkuo	0.094	0.097	0.085	0.096	0.103	0.047	0.046	n.a.
Tros	0.084	0.070	0.071	0.081	0.085	0.074	0.073	0.065	n.a.

The intraspecific divergence is shown on the diagonal. Tach: Tetraclita achituvi; Truf: Tetraclita rufotincta; Tren: Tetraclita reni; Tsp: Tetraclita sp. nov.; Tehs: Tetraclita ehsani; Tser1 and 2: Tetraclita serrata clade 1 and 2; Tkuo: Tetraclita kuroshioensis; and Tros: Tesseropora rosea. The intraspecific divergence for Tkuo and Tros is not available as only one specimen was analyzed for each of them.