Abstract
Stephattodomoide8 diacanthie n.sp. is described from the fish Psevdosciaena dicteanthu8 of Karachi coast. This Elpecies is charac-terised by possessing oral sucker with five rows of uninterrupted crown of spines, anterior rows of larger and posterior of relatively smaller spines, large and elongated &partite seminal vesicle, long cirrus sac extending 'ar behind the ventral sucker, genital pore immediately preacetabular, vitelline follicles extending from much posterior to acetabulum to posterior end of the body, and eggs 0,072 to 0.089 by 0.043 to 0.061 in size. P8eudosciaena diacanthus is a new host for the genus.
INTRODUCTION
Previously only one species of the genus Stephanogtomoide8 dorabi (11famaev and Oahmarin, 1966) has been described from the fish Chirocentrus dorab. The present one is the second species of the genus and first from Arabian Sea from the fish Pseudosciaena dicta:gnaw. The present species is regarded new and the name Stephanostomoide8 diaranthi is proposed referring to the host. Fishes were collected from Fish Harbour, Kairachi. Trematodes were recovered from the intestine of two hosts out of 25 hosts examined during 1981-82. A total of 30 specimens were collected, fired arrt stains]. by u3ull methods, and perma-nent mounts were prepared for a detailed study. Diagrams were made with the help of a micro-projector and camera lucida. Measurements are given length by width in millimeters. Holotype and paratypes are in the collection of Parasitology Section, Department of Zoology, University of Karachi.
*Department of Zoology, University of Karachi, Karachi.
