Ng & Huang, 1997
Carapace oval, broader than long (proportionately broader in males); regions poorly defined, cervical groove narrow, gastric grooves indistinct or incomplete; dorsal surfaces smooth (sometimes appearing slightly punctate), without setae or pubescence; front low, margin gently convex from dorsal view; separated into 2 broad lobes by narrow fissure, no trace of lateral lobes; supra- and infraorbital margins finely granular; antero-lateral margin gradually joins supraorbital margin, strongly arcuate, divided into 4 very low, rounded lobes (including external orbital angle), each lobe demarcated by short but distinct fissure; antero- and postero-lateral margins sharply demarcated; postero-lateral margins gently concave to almost straight, lined with numerous small, rounded granules; posterior margin of carapace distinctly sinuous, lined with small, rounded granules. Eyes well developed, filling entire orbit; distal part of ocular peduncle with numerous distinct granules. Basal antennal segment large, rectangular, movable, completely filling orbital hiatus; antennal segments 3-5 progressively smaller. Antennular fossa broadly ovate, antennules folding transversely. Merus of third maxilliped subrectangular, broader than long, with shallow submedian depression; ischium with submedian oblique sulcus, inner margin gently crenulated or granulated; exopod stout, tip almost reaching upper edge of merus, inner margin with subdistal triangular projection, flagellum well developed. Posterior margin of epistome separated into 4 broad lobes by short fissures (median one longest); no endostomial ridges discernible.
Surfaces of chelipeds glabrous, smooth to slightly punctate; outer surface of male chela finely punctate, with low ridge on subventral margin which continues into pollex; outer surface of female chela almost smooth; fingers shorter than palm, dorsal margin of dactylus with distinct crest, cutting edges each with several prismatic cutting teeth and several denticles; dorsal margin of palm with well-developed transverse foliaceous crest which is broadest proximally; inner margin of carpus with well-developed lamelliform tooth which appresses on broadest part of transverse crest on palm; dorsal and ventral margins of merus with well-developed, entire crest. Ambulatory legs relatively short, 2 pair longest; merus with distinct crest on dorsal margin, crest on ventral margin developed only proximally; carpus with low dorsal crest; propodus with low dorsal and ventral crests; dactylus styliform, tip slightly spoon-shaped; margins lined with scattered long setae but otherwise unarmed.
Anterior thoracic sternum smooth; sternites 1 and 2 completely fused; distinct suture present between sternites 2 and 3; suture between sternite 3 and 4 medially interrupted with only lateral parts distinct, median part depressed; lateral margins of sternites 2-4 finely granulated; male abdominal cavity reaching imaginary line connecting proximal part of chelipedal coxae. Male abdominal segments 3-5 completely fused without trace of sutures, lateral margins gently concave, proximal margin approximately twice the length of distal margin; segment 1 slightly broader than segment 2; segment 6 squarish, lateral margins gently concave; telson acutely triangular, lateral margins gently convex, tip rounded. Female abdomen oval; segments 3-6 progressively longer, lateral margins convex; telson triangular, lateral margins gently concave.
G1 gently curving outwards; with distinct elongate process on inner subdistal margin; dorsal surface with numerous short, sharp granules which extend well below half length of G1; tip rounded, with 7 long setae. G2 short, sinuous; distal segment about 1/3 length of basal segment, gently upcurved. (Ng & Huang, 1997)
Type locality: Port at Tung-Kang, Ping-tung County, southern Taiwan, 100-400 m.
Range: Taiwan - Tung-Kang, Ping-tung County (Ng & Huang, 1997); 100-400 m.