Microphotographs of metacercariae (live) of the family Diplostomidae. (A) Diplostomum baeri ex Rutilus rutilus (voucher, FP1150, see Table S2); (B) D. mergi Lineage 2 of Georgieva et al. [23] ex Abramis brama (voucher, FP1190, see Table S2); (C) D. parviventosum ex Gobio gobio (voucher, FP542, see Table S2); (D) D. pseudospathaceum ex Silurus glanis (voucher, PX552672); (E) D. spathaceum ex Cyprinus carpio (voucher, PX552682); (F) Diplostomum sp. A of Kudlai et al. [41] ex Carassius gibelio (voucher, PX552697); (G) Diplostomum sp. C of Kudlai et al. [41] ex Scardinius erythrophthalmus (voucher, PX552699); (H) Diplostomum sp. Lineage 3 of Blasco-Costa et al. [5] ex S. erythrophthalmus (voucher, FP702, see Table S2); (I) Diplostomum sp. Lineage 4 of Blasco-Costa et al. [5] ex Perca fluviatilis (voucher, FP673, see Table S2); (J) Diplostomum sp. Lineage 5 of Blasco-Costa et al. [5] ex Coregonus albula (voucher, PX552712); (K) Diplostomum sp. Lineage 6 of Blasco-Costa et al. [5] ex Pungitius pungitius (voucher, PX552714); (L) Hysteromorpha triloba, excysted metacercaria ex Tinca tinca (voucher, PX552718); (M) Posthodiplostomum scardinii inside of the brain tissue ex S. erythrophthalmus; (N) P. scardinii, encysted metacercaria ex S. erythrophthalmus (voucher, PX552730); (O) P. scardinii, excysted metacercaria ex S. erythrophthalmus (voucher, PX552730); (P) Posthodiplostomum brevicaudatum, encysted metacercaria ex S. erythrophthalmus (voucher, PX552721); (Q) P. brevicaudatum, excysted metacercaria ex Esox lucius (voucher, FP1110, see Table S2); (R) Posthodiplostomum cuticola, excysted metacercaria ex Abramis brama (voucher, PX552722); (S) Tylodelphys clavata ex P. fluviatilis; (T) Tylodelphys podicipina ex Lota lota (voucher, FP1156, see Table S2).