Amastra aemulator is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.[1]
| Amastra aemulator | |
|---|---|
| |
| Shell of Amastra aemulator (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. aemulator
|
| Binomial name | |
| Amastra aemulator Hyatt & Pilsbry, 1911
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| Synonyms | |
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Amastra (Metamastra) aemulator Hyatt & Pilsbry, 1911 alternative representation | |
Description
editThe length of the shell attains 15.5 mm, its diameter 8.6 mm.
(Original description) The shell contains seven whorls. The shell is narrowly perforate, ovate-pyramidal, and moderately solid. The spire's outlines are nearly straight at the base, becoming slightly concave near the apex. The whorls are slightly convex and relatively short. The 2½ whorls of the protoconch are a dull purplish color and very finely and regularly striate when unworn. The subsequent whorls are irregularly wrinkle-striate, with the cuticle initially light olive, transitioning to olive-brown on the last two whorls. The surface is somewhat glossy, but where the cuticle is worn away, it reveals a dull gray and purplish-brown calcareous layer beneath.
The aperture is small, slightly oblique, and dull purplish-gray inside, becoming paler with a barely perceptible thickening near the lip. The columella is short, thick, and whitish, featuring a subhorizontal lamella. The parietal callus is very thick, its edge forming a ledge that seamlessly connects the ends of the lip.[2]
Distribution
editThis species is endemic to Hawaii and occurs on Oahu Island.
References
edit- ^ Amastra aemulator Hyatt & Pilsbry, 1911. 2 December 2024. Retrieved through: World Register of Marine Species.
- ^ 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. pp. 190–191. Retrieved 2 December 2024.
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This article incorporates text from this source, which is in the public domain.
