Derbesia ryukyuensis Yamada & T. Tanaka, 1938: 64–66, fig. 5 (type locality: Pinai, Yonakuni-shima, Sakishima-gunto, Ryukyu-retto, Japan).—Bolton & Stegenga, 1987: 168, fig. 2b.— R. Anderson & Stegenga, 1989: 302, 306.
Pedobesia ryukyuensis (Yamada & T. Tanaka) Kobara & Chihara, 1984: 156.
INDIAN OCEAN DISTRIBUTION: South Africa.