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
).