Phylogenetic tree based on Bayesian analysis of cox1 with nodal support indicated on the branches by posterior probabilities. The outer box defines taxa in Clade Q sensu Brant and Loker [14]. The gray boxed clade includes individuals of Trichobilharzia franki with the samples from this study in bold, all other samples are from R. auricularia snails. The green box highlights the “peregra” group (sensu [37]); these species are often confused for T. franki but mostly come from A. balthica. The double asterisk indicates that the snail host in the study was also characterized genetically. Blue arrows indicate schistosomes from R. auricularia but did not group within the clade for T. franki. Taxa are listed with their corresponding GenBank accession number, followed by the country of collections (see Table 4).