Table S1. List of species used for tree construction,,,

BOLD species name,BOLD identifier,Accepted species name in WORMS,NCBI accession no. (if applicable)

Mytilus edulis,GBMLB3518-09,Mytilus edulis,EU332510

Dreissena blanci,GBMBV451-13,Dreissena carinata,HM210035

Dreissena blanci,GBMLB2744-08,Dreissena carinata,EF414481

Dreissena bugensis,EINVA037-19,Dreissena rostriformis bugensis,NA

Dreissena bugensis,GBMLB0350-06,Dreissena rostriformis bugensis,AF096765

Dreissena caputlacus,GBMLB1964-06,Dreissena caputlacus,DQ840099

Dreissena caputlacus,GBMLB1965-06,Dreissena caputlacus,DQ840100

Dreissena polymorpha,EINVA467-20,Dreissena polymorpha,NA

Dreissena polymorpha,GBMBV1879-13,Dreissena polymorpha,JX099437

Dreissena polymorpha,GBMIN103069-17,Dreissena polymorpha,KX537632

Dreissena polymorpha,GBML36945-19,Dreissena polymorpha,MK439901

Dreissena polymorpha,GBML8053-19,Dreissena polymorpha,KX231273

Dreissena polymorpha,GBMLB0774-06,Dreissena polymorpha,AF474404

Dreissena polymorpha,GBMLB2731-08,Dreissena polymorpha,EF414494

Dreissena polymorpha,GBMLB3580-09,Dreissena polymorpha,AM749001

Dreissena polymorpha,MGOCF056-16,Dreissena polymorpha,NA

Dreissena polymorpha,NIMUS098-14,Dreissena polymorpha,NA

Dreissena presbensis,GBMBV458-13,Dreissena carinata,HM210028

Dreissena presbensis,GBMLB2738-08,Dreissena carinata,EF414487

Dreissena rostriformis,GBMBV1880-13,Dreissena rostriformis bugensis,JX099436

Dreissena rostriformis,GBMBV3446-15,Dreissena rostriformis bugensis,KJ881409

Dreissena stankovici,GBMLB1682-06,Dreissena carinata,DQ333691

Dreissena stankovici,GBMLB1691-06,Dreissena carinata,DQ333700