Amastra eos is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae. [1]
| Amastra eos | |
|---|---|
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| Shell of Amastra eos (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. eos
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| Binomial name | |
| Amastra eos Pilsbry & C. M. Cooke, 1914
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| Synonyms | |
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Amastra (Metamastra) eos Pilsbry & C. M. Cooke, 1914 · alternative representation | |
Description
editThe length of the shell attains 12.4 mm, its diameter 8 mm.
(Original description) The thin shell is perforate and globose-conic. It has a chestnut-brown coloration that deepens along the suture, while the base is paler, often marguerite yellow near the axis. The surface is slightly lustrous, finely and irregularly striate, and lacks spiral lines. The apical whorls are smooth, with the spire displaying straight outlines above and convex contours below. The whorls are strongly convex just below the suture. The outer lip is thin, and the columellar lamella is also thin and moderately oblique.
The color division on the body whorl is typically distinct and abrupt in immature shells. However, in mature specimens, the colors tend to blend, although the bipartite pattern remains discernible upon close examination.[2]
Distribution
editThis species is endemic to Hawaii and occurs on Oahu Island.
References
edit- ^ Amastra eos Pilsbry & C. M. Cooke, 1914. 27 November 2024. Retrieved through: World Register of Marine Species.
- ^ Pilsbry, H. A. & Cooke, C. M. (1914–1916). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 23: Appendix to Amastridae, Tornatellinidae, Index to vols. XXI-XXIII. pp. i-xi. Philadelphia: Conchological Department, Academy of Natural Sciences. p. 26. Retrieved 27 November 2024.
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This article incorporates text from this source, which is in the public domain.
