Neanura (Metanura) okinawana Yosii 1965 was redescribed with special reference to its chaetotaxy including some minute setae, which are overlooked in the original description. In addition, two new species of the subgenus Metanura were described from the Ryukyu Islands, Southwestern Japan. N. (M.) yonana sp. nov. can be separated from other consubgeneric species by having dorsal tubercles united into a large mass covering whole width of each of posterior three abdominal segments. N. (M.) amamiana sp. nov. can be identified by body setae extremely widened at apex.