Aesopus pallidulus

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Aesopus pallidulus
Aesopus pallidulus 001.jpg
Shell of Aesopus pallidulus (holotype in the Australian Museum)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Columbellidae
Genus: Aesopus
Species:
A. pallidulus
Binomial name
Aesopus pallidulus
(Hedley, 1906)
Synonyms [1]

Mitromorpha pallidulaHedley, 1906 (superseded combination)

Contents

Aesopus pallidulus is a species of sea snail, a marine gastropod mollusk in the family Columbellidae, the dove snails. [1]

Description

The length of the shell attains 4.6 mm, its diameter 1.5 mm.

(Original description) The shell is small and narrow with a fusiform shape, tapering to blunt ends. It consists of five oblique whorls, including a protoconch that comprises one and a half whorls. The shell is dull white with two narrow, pale brown spiral bands on the body whorl: one at the periphery and the other between the periphery and the siphonal canal. The lower band is more distinct, spreading over five ridges and furrows.

Sculpture: The dome-shaped protoconch features fine, closely spaced radial riblets, ending with a slight varix. The teleoconch begins abruptly with seven evenly spaced spiral ridges and equal furrows, which gradually increase in size and number. On the body whorl, the ridges total twenty-six, becoming smaller and more crowded towards the anterior. The ridges are square in cross-section, polished, and slightly narrower than the flat furrows, which are radially striated.

The aperture is narrow with an excavate columella. The anal sinus is indistinguishable, and the siphonal canal forms a notch. [2]

Distribution

This marine species is endemic to Australia and occurs off New South Wales, Tasmania and Victoria.

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References

  1. 1 2 WoRMS. "Aesopus pallidulus (Hedley, 1906)". World Register of Marine Species . Retrieved 6 June 2024.
  2. ↑ Hedley, C. (1906). Studies on Australian Mollusca. Part IX. Proceedings of the Linnean Society of New South Wales. 30: 520–546 PD-icon.svg This article incorporates text from this source, which is in the public domain .
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