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Revision as of 14:58, 4 December 2024 by William Avery (talk | contribs) (MOS:REFSPACE; + taxonbar from=Q131385782)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Species of mollusc
| Amastra sola | |
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| Shell of Amastra sola (holotype) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. sola |
| Binomial name | |
| Amastra sola Hyatt & Pilsbry, 1911 | |
| Synonyms | |
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Amastra (Cyclamastra) sola Hyatt & Pilsbry, 1911 alternative representation | |
Amastra sola is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Description
The length of the shell attains 9.8 mm, its diameter 5⅓ mm.
(Original description) The shell contains 6½ whorls. The shell is openly perforate, conic, and thin, with minimal luster. The last one or two whorls are a rich dark reddish-brown, accented by lighter lines and patches, while the upper whorls appear pale yellowish, indicative of early cuticle decay.
The spire has straight outlines, though the individual whorls are markedly convex, creating a pronounced contour. The whorls in the protoconch are smooth, transitioning to later whorls that exhibit irregular fine growth-wrinkle sculpture.
The aperture is reddish-brown on the interior, with a very thin, sharp outer lip. The basal margin is well-rounded, while the columellar margin is straight, slightly dilated at the upper end, and arches over the narrow umbilicus. The columellar fold is thin, small, and strongly oblique, adding to the shell's delicate structure.
Distribution
This species is endemic to Hawaii, occurring on Oahu Island.
References
- Amastra sola 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. 158. Retrieved 3 December 2024.
{{cite book}}: CS1 maint: multiple names: authors list (link)
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.
{{cite book}}: CS1 maint: multiple names: authors list (link)