A new species of the genus Tubulovesicula Yamaguti, 1934 is described here and named Tubulovesicula microcaudum n.sp. from the stomach of the fish Otolithus argenteus (Sciaenidae) off Karachi coast. The new species is different from the previously described species found in Pakistan in having long soma and small ecsoma with varying degrees of small curved tail. Suckers are unequal. Seminal vesicle long and pre-testicular in position. Pars prostatica very long. Hermaphroditic duct enclosed in muscular pouch leading to prominent cirrus sac. Genital pore beneath intestinal bifurcation. Ovary oval, kidney-shaped in the middle of soma. Vitelline tubules lying immediately behind the ovary. Uterus passes in close coils, slightly intruding anterior of ecsoma. Eggs moderate-sized. Excretory pore terminal.
Neelofer Shaukat, Fatima Mujib Bilqees, M. Farooq Haseeb. (2008) A NEW SPECIES TUBULOVESICULA MICROCAUDUM (TREMATODA: HEMIURIDAE LOOSS, 1899) FROM THE FISH OTOLITHUS ARGENTEUS OFF KARACHI COAST, , Volume 5, Issue 3 & 4.
