Amastra seminigra
| Amastra seminigra | |
|---|---|
 | |
| Shell of Amastra seminigra (holotype) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. seminigra |
| Binomial name | |
| Amastra seminigra Hyatt & Pilsbry, 1911 | |
| Synonyms | |
| Amastra (Amastrella) seminigra Hyatt & Pilsbry, 1911 alternative representation | |
Amastra seminigra 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 21.2 mm, its diameter 10.3 mm.
(Original description) The shell contains 6½ whorls. The apical whorls are fleshy or purplish in color, transitioning to a light yellow hue on the last two whorls. These are partially or predominantly covered with a pitch-black cuticle, which may appear in scattered shreds or remain nearly intact, except near the aperture.
The interior of the shell is either white or faintly tinged with pink, adding a subtle contrast to its exterior.[2]
Distribution
This species is endemic to Hawaii, occurring on Oahu Island.
References
- ^ Amastra seminigra Hyatt & Pilsbry, 1911. 3 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. p. 195. Retrieved 3 December 2024.
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This article incorporates text from this source, which is in the public domain.
- Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (1995). Catalog of the native land and freshwater molluscs of the Hawaiian Islands. vi. Leiden: Backhuys Publishers. p. 107.
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