Species of Diversohamulus infecting Ogilby’s hardyhead, Atherinomorus vaigiensis, Atherinidae. Figures 22–30 Diversohamulus similis n. sp. 22, Whole mount (ventral view, composite); 23, Copulatory complex (ventral view); 24, Gonadal sclerite; 25, Hook (pair 6); 26, Hook (pair 3); 27, Hook (pair 1); 28, Ventral bar; 29, Ventral anchor; 30, Dorsal anchor. Figure 31 Copulatory complex of Diversohamulus tricuspidatus Bychowsky & Nagibina, 1969 (ventral view). Parallel lines on Figures 23 and 31 indicate the limits of the dimensions measured.