Takeda & Marumura, 1997
Carapace transversely elliptical ca. 1.56 (holotype) and 1.52 (paratype) times broader than long; dorsal surface shining, seemingly smooth, only with minute punctures of various sizes, being regularly convex dorsally along fronto-orbital and antero-lateral margins, with its median part rather flattened; regions ill-defined, with shallow linear furrows demarcating protogastric, mesogastric and cardiac regions; a pair of small pits side by side at posterior part of mesogastric region. Front ca. 0.5 times as wide as carapace, slightly projecting forward beyond general elliptical outline of carapace, divided into two lobes by a median small, but distinct notch; each lobe weakly convex, narrowly rimmed, continuous with supraorbital margin through a shallow dorsal and anterior depression. Fronto-orbital width ca. 0.37 times as wide as carapace; supraorbital margin narrowly rimmed like frontal margin, raised dorsally, continuous with antero-lateral margin through a shallow, but distinct depression.
Antero-lateral margin strongly convex outwards so as to form a regular curve, without any indication of notches, being fringed with a narrow, but distinct rim for its whole length; rear end of rim not at all angulated, but quite distinctly isolated from postero-lateral margin which is thickened and convex for its anterior 1/3 behind rear end of antero-lateral rim; posterior 2/3 of postero-lateral margin nearly straight, strongly convergent towards lateral end of posterior margin. Posterior margin subequal to fronto-orbital margin fringed with short hairs.
Third maxillipeds, sternum, ventral surfaces of coxae of chelipeds and ambulatory legs, and abdomen thickly covered with yellowish stiff setae of various lengths.
Both chelipeds robust, subequal in size and shape; ischium and merus short, disguised under carapace in natural posture, with whole length of ischium and proximal 1/2 of merus fringed with brush-like yellow hairs; carpus with 2 blunt teeth and 3 tufts of yellow hairs at its inner angle; palm robust, inflated, roughened with minute punctures, without distinct crest at basal upper part. Fingers black, with whitish cutting edges of 4 or 5 blunt conical teeth; tips subacute, curved inward.
Ambulatory legs depressed, broad, with stongly crested anterior margins. Each merus fringed with equidistant tufts of yellow hairs, 5 along upper margin and 3 or 4 at proximal half of posterior margin; carpus also with 1 or 2 similar tufts on anterior margin; surface along posterior margin of propodus with short tomentum, fringed with longish hairs; dactylus also with short tomentum for its upper surface except for a longitudinal median ridge.
Male first pleopod with a recurved small beak, with a fringe of 15 long hairs distally. (Takeda & Marumura, 1997)
Type locality: off Shirahama, Kii Peninsula, Japan, 110 m.
Range: Japan - off Shirahama, Kii Peninsula (Takeda & Marumura, 1997); 110 m.