Euspira napus

Euspira napus
Shell of Euspira napus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Naticidae
Genus: Euspira
Species:
E. napus
Binomial name
Euspira napus
(E. A. Smith, 1904)
Synonyms[1]
  • Natica napus E. A. Smith, 1904 (original combination)
  • Polinices (Euspira) napus (E. A. Smith, 1904)
  • Polinices napus (E. A. Smith, 1904)

Euspira napus is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.[1]

Description

The diameter of the shell varies between 30 mm and 40 mm.[2]

The shell is rounded, solid, and smooth, with a low spire. Its aperture is semi-circular, bordered by a thin outer lip, while the base features a distinct yet narrow umbilicus and a slightly thickened edge on the inner lip. The surface sculpture consists of fine, closely set growth lines. The living animal has a horny operculum.[2]

The shell is white, with a dull brown periostracum (a thin, skin-like outer covering), typically displaying a pattern of fine spiral lines.[2]

Distribution

This species is endemic to South Africa and occurs off Port Alfred and the Agulhas Bank (False Bay to western Transkei) at depths between 50 m and 210 m.

References

  1. ^ a b Euspira napus (E. A. Smith, 1904). 28 April 2010. Retrieved through: World Register of Marine Species.
  2. ^ a b c Herbert, D.G., Jones, G.J. & Atkinson, L.J. (2018). Phylum Mollusca. In: Atkinson, L.J. and Sink, K.J. (eds) Field Guide to the Offshore Marine Invertebrates of South Africa. Pretoria: Malachite Marketing and Media. p. 289. doi:10.15493/SAEON.PUB.10000001. ISBN 978-1-86868-098-6.{{cite book}}: CS1 maint: multiple names: authors list (link) This article incorporates text from this source, which is available under the CC BY-SA 4.0 license.
  • Hülsken, T. (2008). Phylogenetic relationship and species identification within the Naticidae Guilding, 1834 (Gastropoda: Caenogastropoda). PhD Thesis. Ruhr University.

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