Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: III. Five new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius bocourti, P. djambal and P. hypophthalmus

Abstract

The examination of gill parasites from Pangasius bocourti Sauvage, 1880; P. djambal Bleeker, 1846; P. hypophthalmus (Sauvage, 1878) and P. gigas Chevey, 1930 (Siluriformes, Pangasiidae) revealed the presence of seven species of Monogenea among which five are considered new species. They all belong to Thaparocleidus Jain, 1952 (Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001). . P. bocourti: T. combesi n. sp.: T. komarudini n. sp. and T. vietnamensis n. sp. . P. djambal: T. caecus (Mizelle & Kritsky, 1969), T. combesi n. sp., T. euzeti n. sp., T. komarudini n. sp. and T. sadilii n. sp. . P. hypophthalmus: T. caecus, T. siamensis (Lim, 1990) and T. vietnamensis n. sp. . P. gigas : no Monogenea were found on this host species.

Keywords

• Monogenea
• Ancylodiscoididae
• Thaparocleidus combesi n. sp.
• Thaparocleidus euzeti n. sp.
• Thaparocleidus komarudini n. sp.
• Thaparocleidus sadilii n. sp.
• Thaparocleidus vietnamensis n. sp.
• Thaparocleidus caecus
• Thaparocleidus siamensis
• freshwater fish
• Siluriformes
• Pangasiidae
• Pangasius bocourti
• Pangasius djambal
• Pangasius hypophthalmus
• Pangasius gigas
• South East Asia.