Two new species of Paradeontacylix MCINTOSH, 1934(trematoda:Sanguinicolidae) from the vascular system of a cultured marine fish, Seriola purpurascens.

Abstract

Descriptions and identifications are given of two new blood flukes from the vascular system of a marine fish, Seriola purpurascens, cultured intensively on a Pacific coast of Shikoku Island, Japan. The two trematodes belong to the genus Paradeontacylix (Sanguinicolidae). P.grandispinus sp. nov., about 2.0-3.3 mm in body length, resembles P. sanguinicoloides MCINTOSH, 1934 in general morphology, but can be separated from it in the shape of the spines at the posterior end of body and in the number of testes. P. kampachi sp. nov., about 4.7-8.1 mm long, is most similar to P.odhneri (LAYMAN, 1930), but different from it in the relative position of ovary.