Ophiambix aculeatus Lyman, 1880

Okanishi, Masanori, Kato, Moe, Watanabe, Hiromi Kayama, Chen, Chong & Fujita, Toshihiko, 2020, Large populations of two new species of Ophiambix (Echinodermata, Ophiuroidea) discovered on Japanese hot vents and cold seeps, Raffles Bulletin of Zoology 68, pp. 196-213 : 197

Ophiambix aculeatus Lyman, 1880

(New Japanese name: Togari-kaede-kumohitode)

Ophiambix aculeatus Lyman, 1880: 11 , pl. 2(29–30); 1882: 235, pl. 27(10–12); H. L. Clark, 1911: 114; 1915: 222; Matsumoto, 1917: 101; Paterson & Baker, 1988: 1583–1584, figs. 1g–i, 2g, 4.

Ophiambyx aculeatus – Meissner, 1901: 927 (misspelling).

Material examined. NSMT E-9834, 1 specimen, ethanol, collected with ORE beam trawl of 4 m span by the R / V HAKUHO MARU, KH-88-04 , St. SR 75, east off Hachinohe, Aomori Prefecture, northeast of Japan, 40°45.70′N, 144°50. 00′E– 40°46.70′N, 144°50.60′E, 4,870 –5,030 m, 4 October 1988 . NSMT E-11906A (2 specimens, ethanol) , NSMT E-11906B (1 specimen, ethanol), and NSMT E-11906C (1 specimen, dry), collected with ORE beam trawl of 4 m span by the R / V HAKUHO MARU, KH-05-01 , St. RT-04, north slope of Ryukyu Trench , Okinawa Prefecture, southwest of Japan, 24°52.46′N, 127°25.90′E– 24°51.73′N, 127°25.13′E, 4,466 –4,634 m, 18 May 2005 ( Fig. 1 ) .

Distribution. Japan: east off Yakushima Island, north slope of Ryukyu Trench, east off Hachinohe ( Lyman, 1880; H. L. Clark, 1911; present study); Republic of Fiji: Fiji Islands ( Lyman, 1880); United States: off Puruawa Point, Hawaiian Islands ( Lyman, 1880); New Zealand: off White Island ( Paterson & Baker, 1988). Depth range 430–4,634 m.

Figures

Fig. 1. A, known distribution of Ophiambix aculeatus, O. devaneyi, O. epicopus, O. kagutsuchi, new species, O. macrodonta, new species, and O. meteoris; B, enlarged area, sampling localities of examined specimens of Ophiambix aculeatus, O. epicopus, O. kagutsuchi, new species, and O. macrodonta, new species, in this study.