Talochlamys multistriata (Poli, 1795) |
British Isles to Cape Province, Azores to Mediterranean. Lives on muddy sands or sandy mud, often sheltered under stones or rocks, from subtidal grounds down to continental shelf. This is a swimming scallop. Original taxon: Ostrea multistriata. 50-60m deep, off Taormina, Messina Strait, SW. Italy. 15mm. |
Under rocks at 20-25m deep, Seddülbahir, Gallipoli peninsula, Çanakkale, W. Marmara province, NW. Turkey. 13-16mm. Synonyms: Pecten effulgens, textilis & tinctus, Reeve 1853. |
Above and below: comparison between young Mimachlamys varia (left & right) and adult Talochlamys multistriata (center). The very first difference is in the number of ribs: 25 to 35 in varia, 50 to 80 in multistriata. Beach drift, Isola Rossa, NW. Corsica, 13mm. |
Top: Mimachlamys varia. Bottom: Talochlamys multistriata. Outside (O) — M. varia shows few ribs with sparse scales near the margin, while T. multistriata has a dense fan of ribs with many scales. Ctelonium (C) — 6 teeth in varia, 4 in multistriata. Inside (I) — umbonal area thinner and more translucent in multistriata than in varia. |
Found on fishing boats in the harbour, Grado, Friuli Venezia Giulia, NE. Italy. 13mm. Many variants were named; this one is “aurantiaca” Locard. |
Variation set, collected at 2-10m deep, Cap de Nice, Côte d’Azur, SE. France. 20-38mm. Original pictures provided by Eymard Gilbert (FR) – (CC BY-NC-SA). |
Same spot, 8m deep. 41mm. Original pictures provided by Eymard Gilbert (FR). – (CC BY-NC-SA) – |
The species in L. A. Reeve: Conchologia iconica vol. VIII, London 1855: « 106 – Pecten tinctus: Shell triangularly ovate, higher than long, hardly equilateral, equivalve, valves everywhere radiately densely strongly ridged, ridges rather irregular, for the most par in pairs, serrated ; whitish, stained and variegated with orange-vermilion ; ears very unequal. » « 156 – Pecten effulgens: Shell ovate, higher than long, rather thin, equivalve, nearly equilateral, neatly rayed throughout with numerous thin many-scaled ridges ; bright orange-vermilion, archedly streaked with light white-edged purple ; ears rather small, very inequivalve [sic]. » « 174 – Pecten textilis: Shell ovate, rather higher than long, equilateral, nearly equivalve, left valve flatter, both valves densely irregularly ridged, ridges obtusely scaled throughout ; white, mottled with bright orange ; ears very unequal. » |
Intercostal microsculpture in a young specimen (7mm long) from the upper circalittoral, Giglio island, Toscana, W. Italy. Top: outside; bottom: inside. Each frame is 1,5mm in width. |
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