Amastra nucleola

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Amastra nucleola
Amastra nucleola 001.jpg
Amastra nucleola shells
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Amastridae
Genus: Amastra
Species:
A. nucleola
Binomial name
Amastra nucleola
(Gould, 1845)
Synonyms
  • Achatinella brevisL. Pfeiffer, 1846 junior subjective synonym
  • Achatinella nucleolaA. Gould, 1845 superseded combination
  • Amastra (Amastrella) nucleola(A. Gould, 1845) alternative representation

Amastra nucleola is a species of land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae. [1]

Contents

Description

The length of the shell attains 11¼ mm, its diameter 6¼ mm.

The shell is solid, imperforate, and ovate-globose in shape, with a livid chestnut coloration. The apex is pale, while areas near the suture and the anterior portion exhibit a whitish hue. It consists of six whorls, which are slightly tabulate posteriorly, adding a subtle angular appearance.

The aperture is rounded, with a simple lip that remains unadorned. The columella is excavated and covered by a callus, featuring a small but distinct fold. This combination of features gives the shell a sturdy yet refined character.

This is a small, solid species characterized by a livid hue, with the apex and the area near the suture displaying a pale, whitish tone. The shell transitions to a milk-white coloration near the termination of the body whorl at the aperture, adding a delicate contrast to its overall appearance. [2]

Distribution

This species is endemic to Hawaii, occurring on Oahu Island.

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References

  1. ↑ Amastra nucleola (A. Gould, 1845) . 26 December 2024. Retrieved through: World Register of Marine Species .
  2. ↑ Hyatt, A. & Pilsbry, H. A. (1910–1911). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 21: Achatinellidae (Amastrinae). Philadelphia: Conchological Department, Academy of Natural Sciences. p. 153. Retrieved 26 December 2024.{{cite book}}: CS1 maint: multiple names: authors list (link)PD-icon.svg This article incorporates text from this source, which is in the public domain .
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