Amastra kaunakakaiensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae. [1]
| Amastra kaunakakaiensis | |
|---|---|
| |
| Shell of Amastra kaunakakaiensis (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. kaunakakaiensis
|
| Binomial name | |
| Amastra kaunakakaiensis Pilsbry & C. M. Cooke, 1914
| |
| Synonyms | |
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Amastra (Amastra) kaunakakaiensis Pilsbry & C. M. Cooke, 1914 · alternative representation | |
Description
editThe length of the shell attains 14.2 mm, its diameter 7.5 mm.
(Original description) The shell is narrowly perforate, oblong-conic, and very thin. It is chestnut brown, glossy, and bare in front of the aperture, while the rest is covered with a delicate russet cuticle that deepens to chestnut and often black on the last half whorl, where it takes on a slight gloss.
The shell contains 5¾ whorls. The embryonic whorls are flattened, carinate, and costate, transitioning to moderately convex subsequent whorls with irregular striations. In younger specimens, up to the middle of the fifth whorl, the whorls are sharply angular, but this angle becomes concealed in adults.
The aperture is dark inside, lacking both a white lining and a lip-rib. The columellar fold is thin and oblique, with the columellar margin reflected, almost entirely closing the perforation.[2]
Distribution
editThis species is endemic to Hawaii and occurs on Molokai Island.
References
edit- ^ Amastra kaunakakaiensis Pilsbry & C. M. Cooke, 1914. 29 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. 37. Retrieved 27 November 2024.
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This article incorporates text from this source, which is in the public domain.
- Baker, H.B. (1963). "-". Proceedings of the Academy of Natural Sciences of Philadelphia. 115 (8): 198.
- 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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External links
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