Abstract
Notozothecium janauachensis n. sp. is described from the gills of naturally-infected tambaqui, Colossoma macropomum, from the Brazilian Amazon. This new species is characterized by possessing a ventral anchor that has an evenly curved, elongate shaft and a short point; a ventral anchor that is larger than dorsal anchor; a dorsal anchor with a shaft that is strongly bent proximally but distally straight; a copulatory organ that forms nearly a complete ring, the distal extremity of which has a feather-shaped extension and the accessory piece has a hook-shaped subterminal flap originating from the distal rod. Notozothecium janauachensis n. sp. was also found parasitizing C. macropomum from fishculture ponds in Southeast of Brazil.References
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