>Scapharca cornea is quite different from S. inaequivalvis. When the S.
>inaequivalvis first appeared in the Adriatic sea the name S. cornea was
>used, bult later on it was determined as S. inaequivalvis. S. cornea has a
>thicker shell and the ribs are more granulated. Nowadays S. inaequivalvis is
>common in the Adriatic sea but it is an immigrant there.
>Martin C. Cadee, The Netherlands

Hi Martin and Others,

I have spoken with a friend Emidio Rinaldi that he studied the genus
Anadara from
many years, and he told me that Scapharca inaequivalvis (Bruguière 1789 ) and
Scapharca Cornea(Reeve 1843) are synonym,
The only other species of the genus Anadara in Adriatic sea is Anadara
diluvii
(Lamarck 1805)  (syn. Anadara polii (Mayer,1868)) but lives in more depht
of inaequivalvis.
diluvii from > 30 mt,  inaequivalvis till of 10-15 mt, sometimes I have
found them alive
on the sea shore during the low tide.
You can also donwload the "NUOVO CATALOGO DELLE CONCHIGLIE MARINE DEL
MEDITERRANEO" of  Stefano Chiarelli that cand be found on the web site of Sim
(Italian Malacological Society) http://www.aicon.com/sim/


Situation of genus Anadara in Adriatic Sea:

Scapharca inaequivalvis immigrant from Indopacific with Ship ballasts
(first signaling 1960-1970)

Anadara diluvii immigrant from Tyrrenian sea in Adriatic sea
        (first signaling December 1996 from Emidio Rinaldi  Quad.Studi Nat. Romagna,
           6: 11-14, Dicembre 1996 issn 1123-6787))


Ciao!



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