Hi guys
You suppose to search a little more. Please, consult:
SIMONE, L. R. L. & CUNHA, C. M., 2006. Revision of genera Gaza and
Callogaza (Vetigastropoda, Trochidae), with description of a new
Brazilian species. Zootaxa (Auckland), v. 1318, p. 1-40.
All the best, Luiz
--
Luiz Ricardo L. Simone, Ph.D.
Museu de Zoologia da Universidade de São Paulo
Cx. Postal 42494
04299-970, São Paulo, SP
Brazil
[log in to unmask]; [log in to unmask]
www.mz.usp.br
Curriculum:
http://lattes.cnpq.br/5020466945403853
Citando Leslie Allen <[log in to unmask]>:
> Hi Andre:
> Your welcome. Thanks for letting me know about the new one.
> Can you cite where it was published?
>
> FYI: I consider myself a bit of splitter, rather than a lumper, but try to be
> pragmatic as well. As such I also subscribe to the ideology of
> naming clearly
> defined sub-species and/or forms. Naming forms give us parameters, i.e. a
> common point of reference to converse on the particular variety.
>
> Leslie
>
> -----Original Message-----
> Thanks Leslie,
> This is very helpful!
> I heard that there is also a new one...
> Gaza compta Simone & Cunha, 2006 from Brazil ??
> Best regards,
> Andre
>
> -----Original Message-----
> From: Conchologists List [mailto:[log in to unmask]]
> On Behalf Of Leslie Allen
> Sent: Monday, February 12, 2007 2:51 PM
> To: [log in to unmask]
> Subject: Gaza superba
>
> Hello Andre:
> Some nice photos and specimens.
> Your photo # 1 is Gaza superba superba
> Your photo # 2 is Gaza superba cubana
> .. but G. cubana in the sense that it has coloration is the umbilicus.
>
> The member of the Genus Gaza from the Western Atlantic are:
> (after Clench & Aguayo, 1943)
> Gaza superba superba Dall, 1881
> Northern Gulf of Mexico, Greater & Lesser Antilles, Columbia,
> Gaza superba cubana Clench & Aguayo, 1943 North coast of Cuba
> Gaza superba olivacea Quinn, 1991
> Honduras to Colombia & Guiana
> Gaza fischeri Dall, 1889
> Northern Cuba to the Lesser Antilles
> Gaza (Callogaza) watsoni Dall, 1881
> North coast of Cuba
>
> After much study of W.A. Gaza, it is my forgone conclusion that there are
> only 2 species in the Western Atlantic: G. superba & G. watsoni; with G.
> Cubana, fischeri, & olivacea being nothing more than forms or subspecies at
> best.
> There is a tremendous amount of overlap of those varieties. It is very
> reminiscent of 15 years of research I did on Calliostoma bruneum (Dall,
> 1981) vs. C. tejedori Clench & Aguayo, 1949; where by it has much the same
> range and overlap issues, as well as variability in sculpture and other
> morphological details.
>
> Hope this has been helpful.
> Leslie
>
> -------------------------------------------------------------------
> From: Andre Poremski <[log in to unmask]>
> To: [log in to unmask]
> Date: Mon, 12 Feb 2007 11:59:07 -0500
> Subject: Gaza superba
>
> Dear Conch-Lers
> I recently received a nice lot of Gaza superba (labeled G. superba cubana)
> that were dredged from the Mississippi delta in the late sixties.
> I compared these specimens with one superba that I already had in my
> collection that was dredged in the Gulf off Florida's west coast...they were
> slightly different. The new group seemed to lack the iridescence on the
> spire normally associated with superba.
>
> Here are the pictures:
> Specimen from my collection: http://www.poremski.com/images/study/gaza_1.jpg
> Sample specimen from new lot:
> http://www.poremski.com/images/study/gaza_2.jpg
> [Both specimens are roughly the same diameter.]
>
> Is it a periostracum that is causing the difference in appearance? Is the
> difference influenced by locality? Is there any way to clean the shell
> further to bring out the classic Gaza iridescence without ruining the shell?
>
> Thanks in advance for you input.
> Kind regards,
> Andre Poremski
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