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Taxon profile

species

Scutellastra longicosta (Lamarck, 1819)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  family Patellidae »  genus Scutellastra

Scientific synonyms

Patella digitata Fischer von Waldheim, 1807
Patella longicosta Lamarck, 1819

Images

Taxon in country check-lists*

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Description

Shell rather large, up to 76 mm. (3 inches) in length, solid, depressed, stellate, very strongly sculptured with sharply carinated, radial ridges, that project well-beyond the margin, seven of them much stronger than the rest; apex at anterior third to submedian. Colour of exterior dull-black, when not eroded, to a rusty-brown; interior bluish white, with a narrow black margin, and a yellowish brown spatula, the latter clouded with a white callus in senile specimens. Height: 60-75 mm; Width 55-75 mm; Height: 12-23 mm. Radula: Formula 3+ 1 + (2+1+2) + 1 + 3, somewhat similar to that of cochlear in the form of the cusps, which are leaf-shaped with a median groove, and in the massive lateral that has four cusps.
Source: Powell, 1973. The Patellid limpets of the world (Patellidae).

Interchangeable taxa

This species is easily recognised by its depressed star-shape, with the primary ribs extending well-beyond the margin, which is narrowly bordered in black.

Distribution

South Africa, from Oudekraak west side of Cape Peninsula, eastward to Umpangazi, north of Durban. This species occurs commonly in the lower Balanoid and Cochlear zones.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Scutellastra longicosta (Lamarck, 1819)]
Data retrieved on: 7 December 2013
CZ Pfleger V. (1999): České názvy živočichů III. Měkkýši (Mollusca), Národní muzeum, (zoologické odd.), Praha, 108 pp. [as Patella longicosta LAMARCK, 1819]
Data retrieved on: 11 November 2013

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