Bayesian inference phylogram reconstructed using partial 28S rDNA sequences for nine Echinostoma spp. The alignment comprised 1,219 nucleotide positions. Outgroups: Hypoderaeum conoideum and Echinoparyphium cinctum. The newly-sequenced European isolates are shown in red. Sequence identification is as in GenBank, followed by a letter: G, Georgieva et al. ; O, Olson et al. ; L, Lotfy et al. ; M, Mollaret et al. . The scale-bar indicates the expected number of substitutions per site.