A. Milne Edwards, 1873
The carapace is convex anteriorly, very slightly so laterally and posteriorly; the surface is slightly divided into regions by narrow and shallow furrows, and clothed only with thick short setae which arise singly and are uniformly distributed. The front is not produced, and cut into two rounded lobes; its indistinct lateral lobule is separated from the supraorbital angle by a shallow depression.
The antero-lateral border is arched, much shorter than the postero-lateral and armed with three small spines which are subequal and strongly curved forward. The postero-lateral border is long and only slightly inclined.
The chelipeds are unequal in female; the outer surfaces of the segments are thickly covered with short setae like the carapace; in addition, the carpus and palm are rather thickly provided with minute granules; the merus is armed with sharp spines on the upper border, the distal two of those being more prominent; the carpus is also armed with a very sharp stout spine at its inner angle; the palm of the large chela is swollen proximally, while the smaller one is rather slender; the fingers of the larger chela are as long as the upper border of the larger palm, while the smaller ones are much longer than the upper border of the smaller palm; the immovable finger of the smaller chela is slightly curved inward and downward; the tips of the fingers are sharply pointed.
The ambulatory legs are very long and covered with short setae and fringed with more longer setae or hairs; the upper surfaces of the propodus and dactylus are provided each with a row of plumose hairs in addition to simple setae or hairs; each merus of the first three pairs is armed with three or four spines on the upper border and with two or three on the lower border, but without a terminal spine; the merus of the last ambulatory leg is unarmed. (Takeda & Miyake, 1968a)
Type locality: Upolu, Samoa.
Range: Japan - Kii Peninsula (Sakai, 1976a), Okinawa-jima (Takeda & Miyake, 1968a), Kushimoto (Miyake, 1983); Samoa - Upolu (A. MIline Edwards, 1873).