A comprehensive taxonomic list of brittle stars (Echinodermata: Ophiuroidea) from submarine caves of the Ryukyu Islands, southwestern Japan, with a description of a rare species, Dougaloplus echinatus (Amphiuridae) Author Okanishi, Masanori Author Fujita, Yoshihisa text Zootaxa 2019 2019-03-25 4571 1 73 98 journal article 28099 10.11646/zootaxa.4571.1.5 4b455544-f490-4283-b51f-3bab0af22419 1175-5326 2605976 40B4CF49-C6F0-4392-B971-C90AC4768DF1 Ophiocoma pusilla ( Brock, 1888 ) [New Japanese name: Itabuto-kumohitode] ( Fig. 9D ) Ophiomastix pusilla Brock 1888 : 499 .— Pfeffer 1900 : 85 .— Koehler 1905 : 65 , pl. 6, figs 9, 10, pl. 13, fig. 3.— H. L. Clark 1915 : 296 .— A. M. Clark 1967 : 45 , fig. 5. Ophiocoma pusilla . H. L. Clark 1921 : 131 .— Devaney 1970 : 25 –28, figs 26, 29; 1974: 160, 161.— A. M. Clark & Rowe 1971 : 86 , 87.—A. M. Clark 1976: 259, 260; 1980: 544.— A. M. Clark & Courtman-Stock 1976 : 174 , fig. 190.— Cherbonnier & Guille 1978 : 173 , 174, pl. 11(3, 4).— Sloan et al. 1979 : 106 .— Guille & Jangoux 1978 : 64 .— Marsh 1986 : 71 .— Marsh et al. 1993 : 61 .— Rowe & Gates: 1995 : 388 .— Price & Rowe 1996 : 77 .— Irimura & Tachikawa 2002 : 15 .— Stöhr 2011 : 36 – 38, fig. 17l, m. Ophiocoma latilanxia Murakami, 1943a : 194 , fig. 13; 1943b: 217.— A. M. Clark & Rowe 1971 : 86 , 87.— Irimura & Tachikawa 2002 : 15 . Ophiocoma sp.— A. M. Clark 1952 : 208 . Ophiocoma insularia Balinsky 1957 : 26 [Non Ophiocoma insularia Lyman, 1861 ]. Ophiocoma insularia var. variegate— H. L. Ckark 1938: 330 [Non Ophiocoma insularia var. variegate Smith, 1876 ]. Ophiocoma scolopendrina— H. L. Clark 1921 , pl. 13, fig. 9 [Non Ophiura scolopendrina Lamarck, 1816 ]. Material examined. Ie Island (RUMF-ZE-02083[1]): “entrance” of the “Unnamed cave”, under coral rubble, approximately 18 m depth, 24 June 2017 . Distribution. Widely distributed in Indo-Pacific. Depth range 0– 426 m . Remarks. This specimen is identified as Ophiocoma pusilla by virtue of having: numerous and dense granules on disc except near genital slits; four, rarely five cylindrical and pointed long arm spines, approximately two times longer than corresponding arm segment on proximal portion of arms; two oval tentacle scales; broad, two times as wide as long ventral arm plates on proximal portion of the arm (e.g. Devaney, 1970 ).