This species is distinguished by the following characters: body uniformly black; principal tubercles on rostrum are trifid; subopercular tubercle elongated and divided into four spinelets distally; tubercles on dorsal and ventral surfaces and tail are all simple, rather apart from each other with naked skin in between; tubercles on disk margin somewhat depressed, bifurcate at the tip; tubercles on dorsal surface with 5-8 facets; dorsal lobe of esca with two pairs of cirri; head narrow, 26.9% SL; interorbital space also narrow, 8.2% SL; illicial cavity narrow, 7.0% SL; all fins are relatively long (dorsal-fin length 19.1% SL, pectoral-fin length 31.6% SL, anal-fin length 19.7% SL, caudal-fin length 31.0% SL) (Ref. 127411).