FIGURE 5 in An updated concept and revised composition for Hamacreadium Linton, 1910 (Opecoelidae: Plagioporinae) clarifies a previously obscured pattern of host-specificity among species

FIGURE 5. Reproduction with modification of type illustration for (a) Hamacreadium morgani Baz, 1946 and (b) Hamacreadium phyllorchis (Bilqees, 1976) Cribb, 2005. Abbreviations: C, caecum; Cs, cirrus-sac; Ep, excretory pore; Ev, excretory vesicle; Gp, genital pore; O, ovary; Oes, oesophagus; Os, oral sucker; P, pharynx; T, testis; U, uterus; Vf, vitelline follicles; Vs, ventral sucker. Scale: 1000 µm, 1000 µm.