Amastra similaris

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Amastra similaris
Amastra similaris 001.jpg
Shell of Amastra similaris
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Amastridae
Genus: Amastra
Species:
A. similaris
Binomial name
Amastra similaris
Pease, 1870
Synonyms
  • Amastra (Cyclamastra) similarisPease, 1870 alternative representation
  • Amastra rugulosa var. similarisPease, 1870 superseded rank

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

Contents

Description

The length of the shell attains 12.5 mm, its diameter 7.7 mm

The shell is umbilicate, ovate-conic, and moderately solid, with fine yet slightly rough and irregular striations on the body whorl. The spire is straightly conic, composed of 5½ moderately convex whorls. The whorls of the protoconch are smooth and distinctly convex.

The body whorl is compressed around the umbilicus and exhibits a spiral groove within its boundary. The aperture is angular at both the upper and lower ends. The outer lip is obtuse and slightly thickened on the interior. The columella is straight, forming a distinct angle with the basal lip, and features a retreating, oblique fold near its base.

The umbilicus is deep and well-like, contributing to the characteristic structure of the shell. [2]

Distribution

This species is endemic to Hawaii, occurring on Kauai island.

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References

  1. ↑ Amastra similaris Pease, 1870) . 28 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. 150. Retrieved 3 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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