Rathbun, 1916
The present species seems to be related closely to Phalangipus longipes (Linnaeus). In this species however, the armature of carapace is much sharper and the arrangement of spines somewhat different from that species.
The original description by Rathbun is:
The spines of the carapace are placed as in P. longipes but they are slenderer and sharper. The front of the carapace is equally wide, measured between the tips of the anterior and well-developed spines of the preorbital hoods and between the posterior extremities of the hoods. Rostral horns slender, their outer margins divergent. On either side of the very sharp tooth of the upper and the lower margin of the orbit there is a U-shaped sinus.
Pterygostomial spine very long, acuminate, a smaller spine behind it. A laminar projection on the first abdominal segment occupies nearly its whole width and is pointed at the middle; sixth segment armed with a spine near the distal end. The two pairs of spines on the sternum at the base of the chelipeds are well developed and acuminate.
Chelipeds slender, the merus more so than the merus of the ambulatory legs; palm subcylindrical, but widening a little distally; the fingers gape narrowly in their basal half where the margins are wavy, not toothed. (Sakai, 1976: 220)
Type locality: east of Leyte, Philippines, 10°46'24"N, 125°16'30", "Albatross" stn 5478, 103 m.
Range: Maldives - Filidu Atoll, Mulaku Atoll and Nilandu Atoll (Griffin, 1973a); Japan - Okinawa (Sakai, 1976a); Taiwan (Griffin, 1973a); China - Guangxi and Guangdong (Dai & Yang, 1991); Hong Kong (Griffin, 1973a, 1976); Philippines - Lingayen Gulf, west coast of Luzon, off southern Luzon, off western Samar, between Samar and Leyte, Linapacan Strait, east coast of Mindanao, east Palawan, and off western Mindanao (Griffin, 1973a), Manila Bay to Lingayen Gulf, Corregidor, Sueste Pt., Malavatuan, Linapacan Strait, east Palawan, west of Samar, east of Leyte, and Mindanao (Griffin, 1976); Sulu Archipelago - Tawitawi Group (Rathbun, 1916, Griffin, 1973a, 1976); Borneo - off coast of Sarawak (Griffin, 1974), off Sandakan (Griffin, 1976); Indonesia - Arafura Sea (Miers, 1886), Sunda Strait, Madura Strait, Java Sea, Doe Roa Strait, Makassar Strait, Salayar, Bay of Badjoh, Weda Island, Ambon, off Timor, between Du Rowa and Kai Dulah, and Arafura Sea (Griffin, 1973a), Teluk Kau, Halmahera (Griffin, 1974); New Guinea - Roemwakon (Griffin, 1973a); Australia - Admiralty Gulf, W.A., Darnley Island, New Year Island, and North Keppel Island (Griffin, 1973a).