During the current study on metazoan parasites of Common dolphinfish Coryphaena hippurus (Perciformes: Coryphaenidae), a total of twenty four hosts were collected from the Gwadar coast of Balochistan, Pakistan. All of the twenty five hosts examined were infected with Dinurus gedrosiae sp.n. The present species differ from its congeners by having Pseudosegmentation in posterior half of hind body; oral sucker subterminal; pharynx almost round; esophagus elongated; ventral sucker larger; testes rounded in shape, pre-ovarian, oblique in position, separated from each other; cirrus sac large in size; ovary rounded, pre-equatorial, submedian, post-testicular, overlapped by uterine loops and vitellaria; uterus densely filled with eggs, starts behind the acetabulum reaching up to starting of fourth quarter of hind body; caeca diverticulate at level of ovary, reaching up to posterior half of hind body, encroaching into segmented region of body; excretory tube present; excretory pore terminal; eg

Trematode, Dinurus gedrosiae sp.n., Common dolphinfish Coryphaena hippurus, Gwadar, Balochistan, Pakistan.

Type Host: Common dolphinfish Coryphaena hippurus marine edible fish. Type locality: Gwadar coast (25° 7′ 35″ N, 62° 19′ 21″ E) Balochistan Province, Pakistan. Number of hosts examined: 24 Number of specimens recovered: 2061 Site of infection: Stomach/Intestine Type specimens: Deposited in the department of Zoology, University of Sindh, Jamshoro, Pakistan. Etymology: Specific name “Gedrosia” refers to an ancient Greek name of the area (Newly Makran Division, Balochistan). The genus Dinurus was proposed by Looss in 1907 to accommodate trematodes collected from marine fishes. D. breviductus differs from present specimens in having long body with single pseudosegment at middle, anterior segment broader, tubular; oral sucker terminal, larger in size; ventral sucker smaller; shorter distance between oral and ventral suckers; anterior testis close to ventral sucker, elongated, smaller and broader than present species; posterior testis sharing edge with anterior testis

Ahmed, F., Birmani, N. A. and Naz, S. (2020). Dinurus gedrosiae sp.n. (Trematoda: Hemiuridae) in Common Dolphinfish Coryphyna hippurus (Perciformes: Coryphaenidae) of Gwadar coast, Balochistan, Pakistan. Biological Forum – An International Journal, 12(