Amastra hawaiiensis

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Amastra hawaiiensis
Amastra hawaiiensis 001.jpg
Shell of Amastra hawaiiensis (holotype)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Amastridae
Genus: Amastra
Species:
A. hawaiiensis
Binomial name
Amastra hawaiiensis
Hyatt & Pilsbry, 1911
Synonyms

Amastra (Amastrella) hawaiiensisHyatt & Pilsbry, 1911 alternative representation

Contents

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

Description

The length of the shell attains 12 mm, its diameter 7.9 mm.

(Original description) The shell contains 5½ whorls. The shell is imperforate, ovate-conic, thin yet relatively strong, and either white or faintly flesh-tinted beneath a delicate, pale yellowish-brown cuticle. The spire has straight outlines, with embryonic whorls smooth, resembling those of Amastra flavescens .

The subsequent whorl is strongly convex and features fine growth-wrinkle sculpture. The body whorl is inflated and short, sometimes displaying a faint subangular contour at the periphery, particularly in front of the aperture.

The aperture is white, with the outer lip being slightly obtuse but not thickened internally. The columellar fold is moderately pronounced, and the parietal callus is distinct or somewhat thick, with a dirty whitish appearance, adding to the shell's understated elegance. [2]

Distribution

This species is endemic to Hawaii.

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References

  1. ↑ Amastra hawaiiensis Hyatt & Pilsbry, 1911 . 3 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. 319. Retrieved 2 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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