Probolomyrmex okinawensis Terayama et Ogata ^HNS

(Figs. 6A-F, 9F, 10F)

Probolomyrmex okinawensis ^HNS Terayama et Ogata, 1988: 591-592, figs. 1-5.

Holotype: worker, Chibana, Okinawa-hontou Is. [Okinawa-jima], Ryukyus, Japan, 19/iii/1983, T. Mizutani (Faculty of Agriculture, Kyushu Univ., Japan) [examined]. Paratypes: 4 workers from the same nest as the holotype [one paratype examined (loaned from the Institute of Tropical Agriculture, Kyushu Univ.)]; 1 dealate queen and 1 worker, Nakasone, Okinawa-hontou Is., 20/xi/1975, T. Abe [not examined]; 1 dealate queen from Nakijin-joushi, Okinawa-hontou Is., 7/iii/1984, K. Onoyama [examined (loaned from the Institute of Tropical Agriculture, Kyushu Univ.)].

Recognition. This species is similar to P. maryatiae ^HNS sp. nov. and P. vieti ^HNS sp. nov., but distinguished from the latter two by the posteroventral portion of subpetiolar process forming only an obtuse angle in the worker and queen.

Distribution. Known only from Okinawa-jima (C. Ryukyus).