Wood-Mason, 1892
Carapace quadrilateral or subquadrilateral, larger than long, moderately convex fore and aft, flat side to side. Surface hardly defined. Exorbital angle marked with a tooth. Antero-lateral borders short, generally armed with one spine behind the exorbital angle. In some species ornamentation of the antero-lateral border becoming obscure or even obsolete with regard to the age, the spiniform teeth of the young completely lacking in large adults. Front a third the breadth of the carapace or a little less, square-cut, straight, entire, not well delimited from the supraorbital angles. Antennules folded transversally. Supraorbital border marked with a single faint short fissure. Antenna with the flagellum standing loosely in the open orbital hiatus. In only some species chelipeds becoming extremely elongated and smooth in largest males. Ambulatory legs with the upper border generally spinose on merus, and sometimes carpus and even propodus; at least one spine on the merus; dactylus styliform. Abdomen with all segments distinct in both sexes. Presence of a stridulatory apparatus, formed by a tuberculated structure near the strong tooth on the upper border of merus of cheliped and a pterygostomial crest or a subhepatic inflation. (Guinot 1998)
Type species: Psopheticus stridulans Wood-Mason, 1892.
Species treated:
Psopheticus hughi Rathbun, 1914
Psopheticus stridulans Wood-Mason, 1892
Psopheticus insignis Alcock, 1900
Psopheticus megalops Takeda, 1989