Amastra elegantula

Amastra elegantula
	Shell of Amastra elegantula (holotype)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Amastridae
Genus:	Amastra
Species:	A. elegantula
Binomial name
	Amastra elegantula; Hyatt & Pilsbry, 1911
Synonyms
	Amastra (Amastra) elegantula Hyatt & Pilsbry, 1911 alternative representation

Amastra elegantula 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 11.8 mm, its diameter 6.9 mm.

(Original description) The shell contains 5½ whorls. The shell is imperforate, small and relatively thin, with an ovate shape and a straightly conic spire. The body whorl is a very pale brown, lighter near the suture, featuring an opaque white band at the periphery and sparsely streaked with brown, transitioning to chestnut-brown behind the lip.

The whorls in the protoconch are slightly convex, with the first being very finely striate. The second whorl is finely plicate below the suture and striate in the middle. Subsequent whorls are adorned with growth striae, adding subtle texture to the surface.

The outer lip is thin, while the columella is purplish and supports a relatively strong, thin lamella, contributing to the shell's refined and delicate appearance. .^[2]

Distribution

This species is endemic to Hawaii and occurs on Molokai Island.

References

^ Amastra elegantula 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. 277-278. Retrieved 2 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)

[WoRMS-1] Amastra elegantula Hyatt & Pilsbry, 1911. 3 December 2024. Retrieved through: World Register of Marine Species.

[2] 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. 277-278. Retrieved 2 December 2024.{{cite book}}: CS1 maint: multiple names: authors list (link) This article incorporates text from this source, which is in the public domain.

[1]

[2]