Brittle stars (Echinodermata: Ophiuroidea) from the continental shelf off Angola and Namibia
Author
Glück, Franziska U.
Author
Stöhr, Sabine
Author
Bochert, Ralf
Author
Zettler, Michael L.
text
Zootaxa
2012
3475
1
20
journal article
44454
10.5281/zenodo.282230
bb15ffdf-3104-4e60-932b-77e650707a27
1175-5326
282230
Ophiura (Dictenophiura) carnea skoogi
(
Koehler, 1923
)
Fig. 6
E, F
West African records.
Ophiura skoogi
:
Koehler 1923
: 11
;
Dictenophiura skoogi
:
Mortensen 1936
: 340
;
Dictenophiura carnea
:
Cherbonnier 1962
: 19
;
Tommasi 1967
: 547.
Ophiura (Dictenophiura) carnea skoogi
:
Madsen 1970
: 233
.
Material examined.
St. 121: dredge sampling,
8°45.318´S
,
13°12.888´E
;
12 specimens
,
2.5–3 mm
. At
44 m
depth.
Diagnosis.
The most striking identifying character of this genus is the presence of distinct combs at the arm bases. These spine combs are separated by the first dorsal arm plate, which itself carries spines to each side opposite to the combs. Arm spines are short and closely appressed. Arms bear only a single tentacle scale distally, but more than three at the proximal pores. There is a single papilla at the apex of the jaw and three low block-like lateral papillae. The species is characterized by a longitudinal furrow on the almost vertical first dorsal arm plate, separating the radial shields distally. The three arm spines are widely separated. All arm plates are tumid.
Distribution.
Ophiura (Dictenophiura) carnea
has been found in the North-East Atlantic Ocean from the Faroes and the Trondheim Fjord to
South-West Africa
. This species has also been reported from the Mediterranean Sea. Northern West Africa: Dakar and southwards, southern West Africa: Porto Alexandre,
Angola
and northwards, from
44 to
110 m
.