Species of gastropod From Wikipedia, the free encyclopedia
Allopeas gracile, common name the graceful awlsnail,[1] is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.[2]
| Allopeas gracile | |
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| Live specimen of Allopeas gracile | |
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| Shell of Allopeas gracile (specimen at the Natural History Museum, London) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Suborder: | Achatinina |
| Superfamily: | Achatinoidea |
| Family: | Achatinidae |
| Genus: | Allopeas |
| Species: | A. gracile |
| Binomial name | |
| Allopeas gracile (Hutton, 1834) | |
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| Synonyms | |
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See list | |
The length of the shell varies between 9.8 mm and 12.1 mm; its diameter between 2.9 mm and 3.3 mm.
(Original description) Animal: The animal is equipped with four retractile tentacles, with the upper pair being longer and bearing eyes at their tips. The foot is elongated, rather rounded at the rear, and truncated at the front. Its color is a pale yellowish hue.
Shell: The shell is transparent, thin, and rather colorless, with a spire that tapers gradually. It consists of 12 whorls, with the body whorl equal in size to the two preceding whorls. The aperture is semi-ovate, longer than it is wide. The columellar lip is straight and slightly reflected, while the outer lip is finely edged. [3]
(Recent description) The shell is conically elongated and slender, with a translucent, glossy surface of pale yellowish hue. It comprises 7½ to 8 whorls, tapering gradually towards a blunt apex. The protoconch consists of approximately two smooth whorls, while the subsequent whorls are adorned with obliquely arranged, fine, and densely packed riblets. The spire tapers evenly, and the whorls are flatly convex with a wide, shallow suture. The last whorl is the largest. The aperture is tall and oblong, with a thin peristome. The columellar margin near the umbilicus is slightly expanded, and the columella is straight. The umbilicus is narrowly open. [4]
Allopeas gracile occurs throughout the tropics and subtropics worldwide.[5]
It is also found living in greenhouses in other areas, as a "hothouse exotic".
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