A new species of the genus Goniopsyllus Brady (Copepoda, Harpacticoida, Clytemnestridae) from Korean waters

A new species, Goniopsyllus dokdoensis, is described from the adjacent waters of Dokdo Island in the East Sea of Korea. The new species is closely related to G. clausi in the triangular shape of the rostrum, the length of the thoracopod 5 exopod, and the constricted genital double somite. However G. dokdoensis is distinguished from G. clausi by its smaller body size, genital field with additional pores adjacent to the copulatory pore, urosomites without dorsal ornamentation, and differences in the length of caudal setae. Also, the sixth pair of legs in the male has two setae at the outer distal corner of each lobe. This study is the first to report the presence of the genus Goniopsyllus in Korean waters.This work was supported by KORDI (PM53901: Sustainable research and development of Dokdo). One of us (WL) also was supported by a grant from the National Research Foundation of Korea (Grant No. R01-2007-000-11140-0), and the discovery of Korean indigenous species project, NIBR. The authors express many thanks to Dr. J.-H. Kang for his help in collecting the samples, and to Dr. Janet Reid and an anonymous reviewer for reading the manuscript and for helpful comments