Rhabdochona haspani New Species (Thelazioidea: Rhabdochonidae) from Stream Fish (Actinopterygii Klein 1185) of Sibi Division Balochistan

A new nematode Rhabdochona (Rhabdochona) haspani n. sp. is described on the basis of the specimens recovered from the intestine of a fish Cyprinion watsoni (Day 1872) from fresh waters in Harnai (Sibi Division) Balochistan. The new nematode specimens are clearly different from all the previously reported species of Rhabdochona Railliet 1916 by the relevant length of esophagus shape and sizes (0.24-0.34 and 0.071-0.076) of spicules distance of nerve ring deirids and excretory pore from the anterior extremity and in the females by measurements of eggs (0.013-0.035) morphology of vagina position of vulva and excretory pore. Additionally the new specimens have 8 teeth in the prosotme and 13 pairs of caudal papillae including 8 preanal and 5 postanal.