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Comparative anatomy of the fasciolariids Pustulatirus ogum and Hemipolygona beckyae from Brazil (Gastropoda: Buccinoidea: Peristerniinae)
Couto, D.; Simone, L.R.L.; Pimenta, A.D. (2015). Comparative anatomy of the fasciolariids Pustulatirus ogum and Hemipolygona beckyae from Brazil (Gastropoda: Buccinoidea: Peristerniinae). Sci. Mar. (Barc.) 79(1): 89-105. https://dx.doi.org/10.3989/scimar.04144.08A
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, more
Peer reviewed article  

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Keywords
    Caenogastropoda [WoRMS]; Fasciolariidae Gray, 1853 [WoRMS]; Latirus Montfort, 1810 [WoRMS]
    Marine/Coastal
Author keywords
    morphology; Caenogastropoda; Fasciolariidae; Latirus; western Atlantic

Authors  Top 
  • Couto, D.
  • Simone, L.R.L.
  • Pimenta, A.D.

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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