A new report on the occurrence of monogenean parasites (Monogenoidea) on gill filaments of freshwater fishes in Meghalaya.

The edible freshwater fishes of several genera including Labeo, Cyprinus, Cirrhinus, Danio, Puntius, Garra (Cypriniformes), Channa (Channiformes), Clarias, Heteropneustes, Rita, Monopterus, Ompak, Bagarius and Mystus (Siluriformes) in Meghalaya State were examined for their helminth parasite spectrum. Two monogenean flukes representing the genera Diplozoon and Bifurcohaptor were recovered from the gills of the host fish, which are redescribed herein and their descriptions supplemented with information on their surface fine topography. Labeo pangusia and L. boga constitute new host records for the diplozoid monogenean. Both the monogenean species are reported for the first time from the fishes in Meghalaya, a new locality record.