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| The ] is subacute, while the ] is short with smoothly curvilinear outlines. Composed of six moderately convex whorls, the shell features a well-defined, deeply impressed suture. The ] is notably ventricose. | The ] is subacute, while the ] is short with smoothly curvilinear outlines. Composed of six moderately convex whorls, the shell features a well-defined, deeply impressed suture. The ] is notably ventricose. | ||
| The ] is ovate and somewhat acute at the upper end. The outer ] is sharp, unexpanded, and moderately thickened internally. The columellar fold is well |
The ] is ovate and somewhat acute at the upper end. The outer ] is sharp, unexpanded, and moderately thickened internally. The columellar fold is well developed and distinctly opaque.<ref name="Hyatt">{{cite book |last1=Hyatt, A. & Pilsbry, H. A. |title=Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 21: Achatinellidae (Amastrinae). |date=1910–1911 |publisher=Conchological Department, Academy of Natural Sciences |location=Philadelphia |page=275|url=https://www.biodiversitylibrary.org/page/23701752 |access-date=3 December 2024}} {{source-attribution}}</ref> | ||
| ==Distribution== | ==Distribution== | ||
Revision as of 05:14, 26 December 2024
Species of molluscNot to be confused with Amastra moesta.| Amastra modesta | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. modesta |
| Binomial name | |
| Amastra modesta (C. B. Adams, 1851) | |
| Synonyms | |
| |
Amastra modesta is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
- Subspecies
- Amastra modesta dimissa Hyatt & Pilsbry, 1911
- Amastra modesta modesta (C. B. Adams, 1851)
Description
The length of the shell attains 13.5 mm, is diameter 7.5 mm.
The shell is relatively thick and short, ovate-conic in shape, with a dingy reddish or ash-brown coloration, often partially covered by a dark-brown epidermis. Its surface displays fine, irregular transverse striae, becoming coarser on the upper whorls, and lacks spiral striations.
The apex is subacute, while the spire is short with smoothly curvilinear outlines. Composed of six moderately convex whorls, the shell features a well-defined, deeply impressed suture. The body whorl is notably ventricose.
The aperture is ovate and somewhat acute at the upper end. The outer lip is sharp, unexpanded, and moderately thickened internally. The columellar fold is well developed and distinctly opaque.
Distribution
This species is endemic to Hawaii.
References
- Amastra modesta (C. B. Adams, 1851). 25 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. 275. 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.
External links
- Adams, C.B. (1851). "Descriptions of new species of Partula and Achatinella". Contributions to Conchology. 8: 125.
- Pfeiffer, L. (1878–1881). Nomenclator heliceorum viventium. Cassel: Fisher. p. 313.
{{cite book}}: More than one of|pages=and|page=specified (help)