Author(s):

Hira Soofi, Nadir Ali Birmani, Ali Murtaza Dharejo

Abstract: During the course ofrnstudy conducted for helminth parasites of catfish Rita ritarn(Siluriformes: Bagridae), a new trematode of genus Dendrorchis Travassos,rn1926 (Trematoda: Gorgoderidae) is described from intestine of the host fish.rnThe new trematode species is characterized by having small body size; Oralrnsucker rounded to pentagonal in shape, terminal, small and ventral suckerrnrounded, sub equal or larger than oral sucker; testes small, branched,rnirregular in shape; ovary triangular in shaped, broad posteriorly and narrowrnanteriorly, situated at left side of body; seminal receptacle present; uterinernloops much compact; two vitelline bodies rounded to oval in shape; eggs arernoval in shaped. On the basis these diagnostic characteristics, a new species Dendrorchisrnritata is proposed to accommodate the recent trematode. This is firstrnrecord of the genus Dendrorchis from Pakistan and Rita rita isrnnew host record for the genus Dendrorchis Travassos, 1926. The name ofrnnew species refers to the name of the host fish.

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