Postorbital ridges terminating cephalically without spine.
Cervical spine is absent or reduced to small tubercle.
The acumen is narrow with two rows of punctations at its narrowest part. Branchiostegal spine is reduced as is the suborbital angle. The antennal scale is widest at mid-length. The chela is subcylindrical and long. The inner surface of the palm is tuberculate with the rest of the surface covered with punctations.