Helminth parasites of fishes from the arabian gulf: 5. On helicometrina qatarensis n. Sp. (digenea: opecoelidae) and stephanostomum nagatyi N. SP. (digenea: acanthocolpidae); parasites of Epinephelus Spp. from Qatari Waters

Abstract

Helicometrina qatarensis n. sp. is described from Epinephelus tauvina and E. summana. It differs from other species of Helicometrina which have 9 testes in the body shape, position of genital pore, distribution of vitellaria and size of eggs. Stephanostomum nagatyi n. sp. is described from E. tauvina and E. chlorostigma. The new species is distinguished from other related species of the genus by the number of spines and distribution of vitellaria