Harry,
No, I did not mean to imply that P.circularis=P.ventricosa, but as you
pointed out that most P. circularis from the eastern Pacific are actually
misidentified and are probably Argopecten ventricosus.
Thanks for clearing up this point.
> Dear Paul,
>
> My surmise is that your shells are misidentified Aequipecten
> commutatus (Monterosato, 1875)
> <http://www.pectensite.com/Aequipecten%20commutatus%20commutatus.html>.
> Your source seems to have made the same mistake as Monterosato and
> Fritz (not Hartmut) Nordsieck.
>
> Charlie, during my lifetime Pecten ventricosus G.B. Sowerby II, 1842
> <http://www.jaxshells.org/617c.htm> has been repeatedly been
> misidentified as P. circularis but it is not P. circularis G.B.
> Sowerby I, 1835. The latter, originally described from Guaymas
> (Pacific coast of Mexico), is considered a mislocalized junior
> synonym of Argopecten irradians concentricus Say, 1822, living along
> the eastern US seaboard and Gulf of Mexico. All of these New World
> taxa are now placed in Argopecten.
>
> Are you suggesting
>
> Harry
>
>
> At 02:01 PM 12/19/2015, [log in to unmask] wrote:
>>Paul,
>>
>>Several folks used the specific epitath solidulus.
>>
>>Pecten solidulus Reeve is now recognized as Argopecten ventricosus
>>(Sowerby, II, 1842). Note that P. circularis (Sow, II. 1835) has also
>> been
>>synonymized with A. ventricosus. It is considered a senior synonym.
>>
>>
>>Pecten solidulus Monterosato, 1889 and Pecten solidulus Nordsieck, 1969
>>are synonymized under Aequipecten commutatus (Monterosato, 1875).
>>
>>Hope that this helps.
>>
>>
>> > Greetings fellow shell fanatics,
>> > I have a taxonomic question/concern for the scallop gurus in the
>> > group. I figured that the awesome shell scholars on Conch-L could set
>> me
>> > straight...;o)
>> > I recently acquired two lovely Pectens for my collection that came
>> labeled
>> > as: Argopecten solidulus (Reeve, 1853), they came from fishermen in
>> gill
>> > nets at 45 - 60 meters depth, off Albufeira, South Portugal, Aug.,
>> > 2014. When I checked WORMS, it stated that this species is a synonym
>> for
>> > Argopecten ventricosus (Sowerby II, 1842).
>> > I was a bit surprised to see that a European/Mediterranean species
>> > would
>> > be synonymized with a species from Tropical West America. Is this a
>> case
>> > perhaps of the species possibly being introduced from one area to the
>> > other for commercial purposes?
>> >
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