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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.15 no.4 Curitiba Dec. 1998

http://dx.doi.org/10.1590/S0101-81751998000400005 

Morphological study on Littorina Flava (King & Broderip) from Brazil (Caenogastropoda, Littorinidae)

 

 

Luiz Ricardo L. Simone

Museu de Zoologia, Universidade de São Paulo. Caixa Postal 42694, 04299-970 São Paulo, São Paulo, Brasil, e-mail: lrsimone@usp.br

 

 


ABSTRACT

A detailed morphological study of the littorinid Littorina flava (King & Broderip), from Venezuelan and Brazilian coasts, is given and commented. a considerable degree of shell characters variation was found, mainly in color and sculpture. The pallial cavity presents normal fashion of mesogastropods, without any detectable morphological modification for the long air-exposure. The digestive system present odontophore muscles very similar to those of the cerithioideans and hydrobioideans; the radula, however, is enormously long; the stomach lacks differentiate style sac. The penis is characteristic in lacking annex glands. The pallial oviduct has no jelly gland, and has a well developed bursa copulatrix and vaginal tube.

Key words: Mollusca, Littorina flava, morphology, systematics, Brazil


 

 

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Recebido em 11.XII.1997; aceito em 26.X.1998.