Ophionereis porrecta Lyman, 1860

Okanishi, Masanori & Fujita, Yoshihisa, 2019, 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), Zootaxa 4571 (1), pp. 73-98 : 84

Ophionereis porrecta Lyman, 1860

[Japanese name: Mitsuita-kumohitode]

( Fig. 8E )

Ophionereis porrecta Lyman 1860: 260 ; 1865: 145, fig. 14, 15; 1882: 162.— Studer 1882: 20.— Koehler 1898: 75 –77; 1905: 53, 54; 1930: 202.— H. L. Clark 1915: 289; 1917: 440; 1921: 117, pl. 17, fig. 6, pl. 33, figs 2, 3; 1939: 94; 1946: 238.— Mortensen 1933:373, 374.— Ely 1942: 49, fig. 5e.— A. H. Clark 1949: 45, 46.— A. M. Clark 1953: 80, 81; 1974: 480.— A. M. Clark & Rowe 1971: 88, 112.— Devaney 1974: 174.— Gibbs et al. 1976: 128.— A. M. Clark & Courtman-Stock 1976: 124, 180, fig. 197.— Cherbonnier & Guille 1978: 207 –210, figs 69A–D, 70E–G.— Sloan et al. 1979: 111.— Liao 1978: 85, fig. 12, pl. 3, fig. 6.— Marsh 1986: 71.— McKnight 1989a: 12; 1989b: 27.― Nomura 1993: 25.— Liao & A. M. Clark 1995: 275, fig. 152.— Rowe & Gates 1995: 409.— Irimura & Tachikawa 2002: 19, 20.— Stöhr et al. 2008: 553, fig. 5c, d.— Stöhr 2011: 35 , 36, fig. 14b, 16.—Okanishi 2016: 671.

Ophionereis aplacophora Murakami 1943a: 215 , fig. 2.

Ophionereis squamata Engel 1938: 24 , pl. 4, figs 3a, b [Non Ophionereis squamata Ljungman, 1867 ].

Ophionereis crassispina Ljungman 1867: 311 .

Ophionereis sophiae Brock 1888: 490 .— Koehler 1905: 54; 1930: 202.— H. L. Clark 1915: 290.

Material examined. Okinawa Island (RUMF-ZE-02051[1], RUMF-ZE-02052[1], RUMF-ZE-02053[1]): “entrance” of the “Hedo-Dome” cave, under rocks or coral rubble, approximately 18 m depth, 12 August 2016 (RUMF-ZE-02051), 22 May 2017 (RUMF-ZE-02052, RUMF-ZE-02053). Ie Island (RUMF-ZE-02054[1], RUMF-ZE-02055[1], RUMF-ZE-02056[1]): “entrance” of the “Unnamed cave”, under coral rubble, approximately 18 m depth, 24 June 2017 (RUMF-ZE-02054, RUMF-ZE-02055), 23 June 2017 (RUMF-ZE- 02056).

Distribution. Widely distributed in Indo-West Pacific. Depth range 1– 298 m.

Remarks. This species is identified as Ophionereis porrecta by virtue of: lacking genital papillae along genital slits; having relatively large scales on aboral interradial disc than other parts; having wide rectangular dorsal arm plates; having small supplementary dorsal arm plates (e.g. A. M. Clark & Rowe, 1971).

Figures

FIGURE 8. Aboral views of living specimens. A, Ophiothrix purpurea von Martens, 1867 (RUMF-ZE-02042); B, Ophiothrix aff. picteti (RUMF-ZE-02044); C, Ophionereis dubia amoyensis A. M. Clark, 1953 (RUMF-ZE-02046); D, Ophionereis fusca Brock, 1888 (RUMF-ZE-02049); E, Ophionereis porrecta Lyman, 1860 (RUMF-ZE-02054); F, Ophionereis tigris H. L. Clark, 1938 (RUMF-ZE-02045); G, Ophiolepis cavitata Okanishi & Fujita, 2018a (RUMF-ZE-02059); H, Ophiolepis cincta Müller & Troschel, 1842 (RUMF-ZE-02058).