A New Trematode Patagifer sanyali N. Sp. (Echinostomatidae: Echinostomatinae) from a Site Nearby to Agasthyamalai Tiger Reserve Forest, Tirunelvelli (Dist.), Tamil Nadu, India

A new species of the echinostomatid trematode Patagifer sanyali n. sp. collected from intestine of Porphyrio poliocephalus obtained from a site nearby to Agasthyamalai Tiger Reserve Forest, Tirunelvelli (Dist.), Tamil Nadu, India is described and illustrated. The new species is compared with other species of the genus Patagifer and found closer to P. wesleyi Verma, 1936 and P. bilobus (Rud. 1819) Dietz, 1909 but it differs from them by its unique feature of bilobed testes, and having fifty collar spines. A key to the Indian species of the genus Patagifer Dietz, 1909 is provided to distinguish it from all of them.