Paratrechina ryukyuensis Terayama, 1999c: 57, fig. 7 (w.q.) JAPAN. Palearctic.

Primary type information: Primary type material: holotype worker. Primary type locality: Japan: Okinawa Pref., Naha-shi, Sueyoshi, 13.iii.1984 (K. Yamauchi). Primary type depository: MNHA. Secondary type information: Secondary type material: 28 paratype workers, 2 paratype queens. Secondary type localities: 2 paratype workers, 1 paratype queen with same data as holotype, 15 paratype workers, 1 paratype queen Japan: Kagoshima Pref., Amami-oshima, Yuwan-dake, 1.vii.1983 (M. Terayama), 11 paratype workers Japan: Okinawa Pref., Ishigake-jima, Omoto-dake, 16.vii.1984 (M. Terayama). Secondary type depository: MNHA.