Allopeas gracile


Allopeas gracile, common name the graceful awlsnail, is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

Description

The length of the shell varies between 9.8 mm and 12.1 mm; its diameter between 2.9 mm and 3.3 mm.
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.
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.

Distribution

Allopeas gracile occurs throughout the tropics and subtropics worldwide.
It is also found living in greenhouses in other areas, as a "hothouse exotic".

Synonyms

Achatina mandralisci Calcara, 1840 junior subjective synonymAclis californica Bartsch, 1927 junior subjective synonymAllopeas gracile var. panayensis junior subjective synonymAllopeas gracilis incorrect grammatical agreement of specific epithetAllopeas pyrgiscus junior subjective synonymBulimus johanninus Morelet, 1877 junior subjective synonymBulimus apex Mousson, 1849 junior subjective synonymBulimus artensis Gassies, 1866 junior subjective synonymBulimus diaphanus Gassies, 1859 junior subjective synonym Bulimus gracilis T. Hutton, 1834 superseded combinationBulimus hortensis C. B. Adams, 1851 junior subjective synonymBulimus junceus A. Gould, 1846 junior subjective synonymBulimus oparanus L. Pfeiffer, 1846 junior subjective synonymBulimus panayensis L. Pfeiffer, 1846 junior subjective synonymBulimus pyrgiscus L. Pfeiffer, 1861 junior subjective synonymBulimus souverbianus Gassies, 1863 junior objective synonymLamellaxis gracilis superseded combinationLamellaxis gracilis superseded combinationLimicolaria bourguignati Paladilhe, 1872 junior subjective synonymOpeas acutius junior subjective synonymOpeas apex junior subjective synonymOpeas gracile superseded combinationOpeas oparanum junior subjective synonymOpeas tangaense d'Ailly, 1910 junior subjective synonymStenogyra acutius K. Miller, 1879 junior subjective synonymStenogyra gracile superseded combinationStenogyra panayensis junior subjective synonymStenogyra gracilis superseded combinationStenogyra juncea junior subjective synonymStenogyra panayensis junior subjective synonymStenogyra upolensis Mousson, 1865 junior subjective synonym