Furrowed astarte (Astarte sulcata)
|Researched by||Susie Ballerstedt||Refereed by||Admin|
|Authority||(da Costa, 1778)|
|Other common names||-||Synonyms||-|
Astarte sulcata has a thick, broadly oval, equivalve shell up to 3 cm long. It is white or pink with a thick, mid to dark brown periostracum, and is often encrusted and stained black around its prominent umbones. The shell has about 20 bold concentric ridges. There is a distinct and deep heart-shaped depression dorsally anterior to the beak (lunule) and a deep elongate depression dorsally posterior to the beak (escutcheon), both are split longitudinally by the hinge line. The adductor scars and pallial line are clear. The inner shell margin is crenulate.
Recorded distribution in Britain and IrelandRecorded at sites in Shetland and Orkney, the Northumberland coast south to Druridge Bay; the Llyn Peninsula and the Irish Sea, south Isle of Man and the west coast of Scotland. Also recorded from Torr Head to Carlingford Lough in Ireland.
Global distributionFound from southern Norway, south to north west Africa and the Mediterranean.
HabitatFound sublittorally in muddy sands to gravels from 5 m to considerable depths.
- Shell broadly oval.
- White or pink shell with thick, brown periostracum.
- Up to 3 cm long.
- Distinct and deep heart-shaped depression dorsally anterior to the beak (lunule).
- Distinct and deep elongate depression dorsally posterior to the beak (escutcheon).
- Left valve has 2 prominent cardinal teeth below the umbone.
- Right valve bears a thick anterior cardinal tooth and a posteriorly slender tooth.
- Approximately 20 bold, concentric ridges on valves.
- Inner margin of shell crenulate.
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Last Updated: 17/04/2008