Parasite data used in the phylogeographical reconstructions.

Loci sampled are cox1 and cox3 (extracted from longer contigs, including complete mitochondrial genomes). Data are: GenBank accession numbers (GACs), collection localities (with coordinates) and source references; unpub, indicates unpublished data with locations drawn from isolate codes, specimen voucher numbers or details in the GenBank. ADL indicates adult worms from laboratory lines based on field-collected infected snails, FCC stands for cercariae from snails collected in the field and used directly to infect laboratory hosts. Parasite data used in the phylogeographical reconstructions.