Comparative anatomy of the fasciolariids Pustulatirus ogum and Hemipolygona beckyae from Brazil (Gastropoda: Buccinoidea: Peristerniinae)

Authors

  • Diogo R. Couto Laboratório de Malacologia, Museu de Zoologia da Universidade de São Paulo
  • Luiz R. L. R. Simone Laboratório de Malacologia, Museu de Zoologia da Universidade de São Paulo
  • Alexandre D. Pimenta Setor de Malacologia, Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro

DOI:

https://doi.org/10.3989/scimar.04144.08A

Keywords:

morphology, Caenogastropoda, Fasciolariidae, Latirus, western Atlantic

Abstract


The Brazilian species Pustulatirus ogum and Hemipolygona beckyae were examined, and certain morphological characters were described. Both species were originally assigned to the genus Latirus, considered as a heterogeneous complex. The radulae of both species are like that which characterizes Latirus, in which the innermost cusp of the rachidian tooth is well developed but always smaller than the other cusps. This feature differs from Leucozonia, in which this cusp is reduced or absent. The penis tapers terminally, and the tapered part may be long (more than half the total penis length), as in H. beckyae, or very short (less than half the total penis length), as in P. ogum. The anatomical data observed in both species are discussed under the framework of fasciolariid systematics and they appear to be widespread among other fasciolariid species. For this reason, to date, the soft-part features here provided and those known from previously studied species of Latirus are not useful for delineating precise generic diagnoses.

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Published

2015-03-30

How to Cite

1.
Couto DR, Simone LRLR, Pimenta AD. Comparative anatomy of the fasciolariids Pustulatirus ogum and Hemipolygona beckyae from Brazil (Gastropoda: Buccinoidea: Peristerniinae). Sci. mar. [Internet]. 2015Mar.30 [cited 2024Apr.23];79(1):89-105. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1570

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