Diagnosis. Carapace trapezoid, longer than wide, fully surrounded by a rim. Rostrum formed as a long triangular plate. Postocular anterior margin sinuous; defined by a postocular tubercle and a more pronounced tooth at anterolateral corner of the carapace. Lateral side of carapace almost straight; diverging posteriorly; with a single projection near base of cheliped. Posterior border of carapace sinuously rounded. Dorsal carapace with visible gastro-cardiac groove and posteriorly developed thoracic grooves. Frontal region trapezoidal; not differentiated from gastric posteriorly. Cardiac region simple and posteriorly not bordered. Male pleon triangular; pleonal somites 1-5 free; somite 1 widest. Chelipeds long; propodus elongated and slightly swollen. Fingers short. Pereopods very long and slender; almost same length. Dactylus short, curved, teeth not observed.