Fromia eusticha Fisher 1913

Mah, Christopher L., Kogure, Yoichi, Fujita, Toshihiko & Higashiji, Takuo, 2024, New Taxa and Occurrences of Mesophotic and Deep-sea Goniasteridae (Valvatida, Asteroidea) from Okinawa and adjacent regions, Zootaxa 5403 (1), pp. 1-41 : 11-13

Fromia eusticha Fisher 1913

Fisher 1913: 213; 1919 375; Domantay & Roxas 1938: 220; A.H. Clark 1952: 286; Jangoux 1978: 294; A.M. Clark 1993: 331; Arai et al. 2018: 194.

Diagnosis

Body strongly stellate (R/r=4.4–4.8) Arms elongate, evenly tapering. Interradial arcs acute. Abactinal surface convex. Abactinal plates round to irregularly polygonal, surface covered by granules. Marginal plates in regular series, regularly decreasing in size with no alternation of large and small plates. Plate surface tumid. Actinal series in three regular series at base of ray. Furrow spines 3, subambulacrals 2. Subambulacral pedicellariae 1 to 3.

Comments

Prior to the description of Fromia labeosa , Fromia eusticha was the only species of Fromia known with pedicellariae. It shares abactinal and marginal plate arrangement with Fromia labeosa .

Occurrence

Ogasawara Islands, Japan, 96.5– 149 m.

Outside japan. Sulu Archipelago, Philippines, Bikini Atoll, Indonesia, intertidal, 44– 55 m.

No Material Examined