A New Species Tubulovesicula magnacirrosa (Trematoda: Hemiuridae Looss, 1899) From the Fish Pseudosciaena diacanthus of Karachi Coast.

Abstract

A new species of the genus Tubulovesicula Yamaguti, 1934 is described here and named Tubulovesicula magnacirrosa n.sp. from the stomach of the fish Pseudosciaena diacanthus (Sciaenidae). This nematode is characterized by having long soma and small ecsoma. Oral sucker terminal, small, pharynx globular, adjacent to the oral sucker. Prepharynx absent. Intestinal caeca long, reaching to the posterior end of ecsoma. Ventral sucker large situated in the anterior-fourth of the body. Testes 2, small, almost equal in size, behind the ventral sucker. Seminal vesicle tubular, extending posteriorly to the posterior margin of ventral sucker. Pars prostatica long, with several prostatic gland cells. Hermaphroditic duct is enclosed in muscular pouch. Sinus sac large, globular, genital pore preacetabular. Ovary globular lying in the middle of the soma. Vitellaria consist of 7 tubules radiating posteriorly from the ovary, postequatorial in soma and far anterior to ecsoma. Uterus occupying, most part of the body, not reaching, into the ecsoma.