“…An updated classification of Luidia species into four morphogroups based on three diagnostic characters (1, the abradial-most abactinal series contains 1.5 times or more plates than the adjacent superomarginal series; 2, mottled and/or banded colour pattern; 3, oral pedicellariae). Quinaster (Döderlein, 1920;Fell, 1963) Quinaria (Döderlein, 1920) L. armata A A P Ludwig, 1905;Clark, 1982Armaster (Döderlein, 1920 Alternaster (Fell, 1963) Alternata (Döderlein, 1920) Koehler, 1910Denudaster (Döderlein, 1920Fell, 1963) Quinaria (Döderlein, 1920) L. gymnochora Fisher, 1919 Denudaster (Döderlein, 1920;Fell, 1963) Quinaria (Döderlein, 1920) Clark, 1953;Clark and Rowe, 1971;Fatemi and Fatemi, 2018; present study…”