(Gordon, 1934)
Very closely resembling Harrovia purpurea Gordon 1934, but distinguished by the gastric region with two tubercles, the second basal segment of antenna 2 not reaching to the end of ventral inner orbital tooth, the posterior border of the 2-4 ambulatory legs without spinules, and the propodus of the third ambulatory leg apparently broader. (Shen et al., 1982)
Description: Carapace distinctly broader than long; rostrum short, distinctly deflexed downwards; inner supraorbital teeth distinct but very small, separated from frontal margin by longitudinal groove, folded downwards; frontal margin appearing entire from dorsal view but separated by distinct longitudinal groove, numerous flat tubercles along the frontal margin; regions well defined, gastric and protogastric regions distinct, slightly swollen with tubercles, cardiac region mildly swollen; hepatic regions depressed; surfaces of carapace relatively smooth to covered with scattered small granules; dorsal surface of carapace usually covered with very thin pubescence. Antero-lateral and postero-lateral margins clearly demarcated; antero-lateral margin rounded, not lamelliform, with four lobes (including external orbital angle), first three lobes truncate, lined with small granules, separated by narrow fissures, tightly adjoining each other, appearing fused, sometimes forming a structure, last tooth confluent with first three teeth but more developed, sharp, laterally directed. Antennules folding obliquely, ca. 45° from horizontal; antennular fossae oblique. Antenna free, does not fill orbital hiatus, reaching into orbit; antennal basal segment rectangular; length to width ratio of second antennal segment 1.4-2.0. Eyes well developed, filling orbit; cornea distinct, pigmented; infraorbital teeth small. Anterior surface of epistome depressed; posterior margin appears entire because of 2 fused truncate median lobes. Pterygostomial regions mildly granulated. Third maxilliped quadrate; ischium rectangular, median oblique sulcus deep; merus squarish; exopod just reaches antero-external edge of merus. Sutures between sternite segments 1 and 2 indistinct, 2 and 3 distinct, shallow; between 3 and 4 interrupted medially; lateral clefts indistinct. Abdomen 7 segmented, sutures for all segments visible. Chelipeds smooth or slightly granular; carpus without spine or tubercle on inner angle; chelae elongated and slender, length ca. 3-4 times length of fingers, height ca. 2 times height of fingers; fingers not carinate, pollex not distinctly bent downwards. Merus of first ambulatory leg more slender than others, dactylus elongated, slender, ca. 2 times length of that on other legs, other segments subcylindrical; anterior margin of merus smooth, not cristate, but may have some very small tubercles at proximal end. G1 long, slender, distal part lined with short spines, tip bends at approximately 90° or 110°. G2 relatively short, distal segment short. (Chia & Ng, 1998)
Type locality: Sorong, western New Guinea.
Range: Japan - Okinawa (Nagai & Nomura, 1988), Kii Peninsula (Takeda & Marumura, 1994); Taiwan; China - Hainan Island (She et al., 1982); Malaysia - Sipadan Island (Chia & Ng, 1998); Indonesia - Sorong, western New Guinea (Gordon, 1934), Obilatu Island (Buitendijk, 1939, Castro, 1989), Bunaken, Siladen, and off Manado, Sulawesi, north Bali, Samalona Island, and Obi Patoe (Chia & Ng, 1998); Papua New Guinea - Madang (Chia & Ng, 1998); Australia - Cartier Reef, Timor Sea, and Elizabeth Reef, Tasman Sea (Chia & Ng, 1998); Guam (Castro, 1989, Chia & Ng, 1998); Palau - Koror (Castro, 1989, Chia & Ng, 1998); Marshall Islands - Kwajalein Atoll (Holthuis, 1953, Castro, 1989), Kwajalein and Anatahan (Chia & Ng, 1998); Waterwitch Bank (Chia & Ng, 1998).