Düben & Koren, in Düben, 1846

Description
Body with a small disc and five gently tapering arms of medium length; R/r: 6 to 10; up to 340 mm in diameter, but usually smaller. Coloured reddish brown, with darker transverse bands along the sides of the arms.

Paxillae
There are four transverse series of lateral paxillae corresponding to each two marginal paxillae. About 15-20 median paxillae across the dorsal side of the arm.

Papulae and pedicellariae
The papulae are only few-lobed and are lacking in the middle of the disc and along the middle of the arms. With bivalved pedicellariae on the oral side.

Tube-feet
The tube-feet lack sucking discs, but bear double ampullae. The gut lacks intestine, pyloric caeca and anus.

Habitat
It is found on muddy substrata, from about 10-1300 m, although it appears to be more rare beyond depths of 600 m.

Distribution
In deeper waters of the North Sea, occurring from Norway to the Mediterranean, to the south at increasing depths and cooler waters.

Kingdom Animalia
Phylum Echinodermata
Class Asteroidea
Order Phanerozonia
Family Luidiidae
Genus Luidia
Species sarsi

Status in World Register of Marine Species

Accepted name: Luidia sarsi Düben and Koren, 1845

Scientific synonyms and common names

Luidia paucispina von Marenzeller, 1893
Astrella simplex Perrier, in Milne-Edwards, 1845
Luidia africana Sladen, 1889

Mortensen, T.H., 1927. Handbook of the Echinoderms of the British Isles. Humphrey Milford, Oxford University Press: 471 pp.

Moyse, J. & P.A. Tyler, 1990. Echinodermata. In: P.J. Hayward & J.S. Ryland (eds): The Marine Fauna of the British Isles and North- West Europe, Volume 2, Molluscs to Chordates. Clarendon Press, Oxford: 839-871.

Picton, B.E., 1993. A field guide to the shallow-water Echinoderms of the British Isles. Immel Publishing: 96 pp.

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