Table 4. Pairwise genetic divergence for Xylophaga species.

	X. washingtona n = 1	X. dorsalis n = 5	X. brava sp. nov. n = 6	X. atlantica n = 6	X. cf. anselli n = 4	Within species (18SrDNA)
X. washingtona n = 1	-	0.036±0.005	0.033±0.005	0.040±0.005	0.031±0.004	n.a.
X. dorsalis n = 4	0.137±0.01	-	0.016±0.003	0.016±0.003	0.012±0.003	0.0000
X. brava sp. nov. n = 3	0.145±0.01	0.134±0.01	-	0.017±0.004	0.00±0.002	0.0000
X. atlantica n = 6	0.127±0.01	0.142±0.01	0.095±0.009	-	0.012±0.003	0.0000
X. cf. anselli n = 3	0.136±0.01	0.126±0.01	0.041±0.006	0.083±0.008	-	0.0000
Within species (28SrDNA)	n.a.	0.002±0.001	0.000±0.000	0.0036±0.001	0.0098±0.003	-

p-values and standard deviation for 28SrDNA and 18rDNA are represented below and above the diagonal, respectively. n.a. =  not applicable, group with only one specimen.