Aegista perplexa

Aegista perplexa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Camaenidae
Genus:	Aegista
Species:	A. perplexa
Binomial name
	Aegista perplexa; (Pilsbry & Hirase, 1905)
Synonyms
	Aegista (Plectotropis) perplexa (Pilsbry & Hirase, 1905) · alternative representation; Eulota (Plectotropis) perplexa Pilsbry & Hirase, 1905 (original combination);

Aegista perplexa is a species of air-breathing land snails, a terrestrial pulmonate gastropod in the family Camaenidae.^[1]

Description

The diameter of the shell attains 12 mm, its height 8.2 mm.

The shell adopts a trochoidal form, exhibiting thinness and a relatively open umbilicus, with the umbilicus approximately one-fourth the diameter of the shell and swiftly narrowing inward. Its surface appears dull, cloaked in a brown cuticle. The shell shows minute, closely spaced, short, linear, raised processes above the periphery, while beneath the periphery, indistinct, fine spiral lines are intricately engraved. The shell contains around 6¼ whorls, each slowly expanding and slightly convex. The body whorl features a subtle yet acute keel at the periphery, descending modestly below the keel towards the aperture. The suture is well impressed, tracing the lower edge of the keel. The aperture presents an oblique orientation. The peristome is thin. The basal and outer margins are narrowly reflexed and arcuate, while the upper margin exhibits a slight curvature and minimal expansion. The columellar margin is nearly vertical, arcuate, and dilated above, with a very thin parietal callus completing the internal structure. ^[2]

Distribution

This species occurs in Taiwan.

References

^ ^a ^b WoRMS. "Aegista inrinensis (Pilsbry & Hirase, 1905)". World Register of Marine Species. Retrieved 16 May 2024.
^ Pilsbry, H. A. & Hirase, Y. (1905). Catalogue of the land and fresh-water Mollusca of Taiwan (Formosa), with descriptions of new species. Proceedings of the Academy of Natural Sciences of Philadelphia. 57: 720-752. Philadelphia This article incorporates text from this source, which is in the public domain.

External links

Catalogue of life in Taiwan: Aegista perplexa

This Camaenidae-related article is a stub. You can help Wikipedia by expanding it.

[WoRMS-1] WoRMS. "Aegista inrinensis (Pilsbry & Hirase, 1905)". World Register of Marine Species. Retrieved 16 May 2024.

[2] Pilsbry, H. A. & Hirase, Y. (1905). Catalogue of the land and fresh-water Mollusca of Taiwan (Formosa), with descriptions of new species. Proceedings of the Academy of Natural Sciences of Philadelphia. 57: 720-752. Philadelphia This article incorporates text from this source, which is in the public domain.

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