Calliaster kyros

The species has a stellate body with five triangular, elongate, tapering arms with pointed tips. The abactinal surface has distinct, conical, pointed spines on the primary circlet and along the carinal series, and more variably in interradial regions. Superomarginal plates are abutted over the midline, with 10–15 along the arm; abactinal plates are present only on the disk and a triangular region onto the arm prior to the abutted superomarginal plates. Superomarginal plates have two spine series, one series present only on plates in contact with the disk and directed dorsally, and a second series extending along most of the arm and directed laterally. The actinal surface, especially adjacent to the adambulacral series and approximately 50% of actinal intermediate plates, has large bivalve pedicellariae with large round valves bearing rough to teethed edges. Furrow spines number 8 or 9. Subambulacral spines number 2 to 4 and are large and thick.^[1]

This species is known from off New Caledonia at depths of 274 to 460 meters.^[1]