Six species of the ostracod families Loxoconchidae and Cushmanideidae from South Korea

Three Loxoconcha Sars, 1866 (L. bizenensis Okubo, 1980, L. japonica Ishizaki, 1968, and L. tosaensis Ishizaki, 1968), one Loxocorniculum Benson and Coleman, 1963 (Lc. mutsuense Ishizaki, 1971), and two Pontocythere Dubowsky, 1939 (P. miurensis (Hanai, 1959), and P. xiphoidea Nakao and Tsukagoshi, 2002) species are briefly redescribed and illustrated. Soft part morphology of L. tosaensis are described and illustrated here for the first time, since this species was known only by the shell morphology. A key to all living Loxoconcha and Loxocorniculum species from East Asia is suggested to facilitate subsequent identification, along with the lists to all East Asian species of the three genera.