Eight species of the genus Pseudopolydora (Polychaeta: Spionidae) are reported from the shallow waters of Taiwan and off mainland China, including P. diopatra Hsieh, 1992, P. cf. kempi japonica Imajima & Hartman, 1964, P. paucibranchiata (Okuda, 1937), and 5 species new to science: P. achaeta, P. corniculata, P. gigeriosa, P. reticulata, and P. vexillosa. All species inhabit muddy-sand tubes in soft bottoms; P. diopatra occurred also on the tube-caps of the onuphid polychaete Diopatra sugokai and shells of the oyster Crassostrea gigas. All species are described and illustrated, and a key is provided for their identification.
