Pheidole ryukyuensis Ogata, 1982: 193, figs. 1-5 (s.w.q.) JAPAN (Ryukyu Is). Palearctic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Japan: Ryukyu Is, Ishigaki I., Mt Omotodake, MY-0087, 29.iv.1979 (K. Ogata). Primary type depository: KUEC. Secondary type information: Secondary type material: 33 paratype major workers, 22 paratype minor workers, 1 paratype queen. Secondary type localities: 21 paratype major workers, 15 paratype minor workers, 1 paratype queen with same data as holotype, 2 paratype major workers, 2 paratype minor workers with same data as holotype but 26.iii.1975 (K. Onoyama), 10 paratype major workers, 5 paratype minor workers Ishigaki I., Yonehara, MY-0089, 1 v.1979 (K. Ogata). Secondary type depository: KUEC.