Redescriptions of four species of Otobothrium Linton, 1890 (Cestoda : Trypanorhyncha), including new records from Australia, New Caledonia and Malaysia, with the description of O-parvum n. sp.

Abstract

Redescriptions are provided of Otobothrium carcharidis (Shipley & Hornell, 1906), O. crenacolle Linton, 1890, O. curium (Linton, 1909) and O. propecysticum Dollfus, 1969 based on the type specimens and new material collected from elasmobranch hosts from Australia, Malaysia and New Caledonia. All are considered to be valid species. A neotype has been designated for O. crenacolle. A new species, O. parvum, is described from the spiral valve of Carcharhinus amblyrhynchos (Bleeker, 1856) and Triaenodon obesus (Rüpell, 1837) from New Caledonia. Otobothrium minutum Subhapradha, 1955 is considered to be a valid but poorly described species, being differentiated on the basis of a lack of testes post..