A new species of Tylocephalum (Cestode: Lecanicephalide, Braun, 1900) from marine fish at Ratnagiri, India

摘要

The present investigation deals with systematic observation of the cestode parasitesTylocephalum?Linton, 1890, that is,?T. damodarae?n.sp. of marine fish?Dasyatis?walga?Muller and Henle, 1841 from West Coast of Maharashtra which is most pathogenic. The present worm comes closer to all the known species of the genus?Tylocephalum?in general topography of organ but differs due to scolex globular anteriorly and quadrangular posteriorly, presence of short neck, mature proglottids three to four times longer than broad, testes 60 to 70 in numbers and pre-ovarian, cirrus pouch oval, elongated placed below the middle of the proglottids, cirrus straight, vas deferens long coiled, genital pores are large, sub-marginal, irregularly alternate, vagina anterior to cirrus pouch, ovary ‘U’ shaped and vitellaria are granular in shape.?Key?words:?Parasites, Tylocephalum, Dasyatis walga.