Abstract: A newly recorded genus Pseudodiclidophora Yamaguti, 1965 and species P. decapterus Yamaguti, 1965 found on the gills of a marine fish, Decapterus macrosoma Bleeker, from Shanwei, Guangdong Province are reported in China for the first time. The shape and all dimensions of the specimens basically agree with original description except for the shape of the clamps and the size of the clamps in both sides of body and the size of the eggs. The specimens are deposited in the Lab of Fish Parasitology, College of Life Sciences, South China Normal University