Aulacospira smaesarnensis
| Aulacospira smaesarnensis | |
|---|---|
| Shell of Aulacospira smaesarnensis | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Hypselostomatidae |
| Genus: | Aulacospira |
| Species: | A. smaesarnensis
|
| Binomial name | |
| Aulacospira smaesarnensis Dumrongrojwattana, 2008
| |
Aulacospira smaesarnensis is a species of small land snail with an operculum, terrestrial pulmonate gastropod mollusc in the family Cyclophoridae.[1]
Distribution
It is endemic to Thailand, occurring on limestone rocks.[2][3]
Description
(original description) The height of the shell varies between 2.47 mm and 2.83 mm, its diameter between 1.45 mm and 1.7 mm.
The shell is minute and helicoid, featuring a moderately elevated spire and a brownish coloration. The protoconch is smooth, contrasting with the teleoconch, which has a noticeably rough texture. The body whorl is large and rounded at the periphery. The tuba projects downward, terminating in a peristome that is both thickened and expanded.
The aperture contains poorly developed barriers, consisting of a parietal lamella, a palatal plica, and a columellar lamella. Unlike more heavily armed species, these structures appear less prominent within the opening.
The radula is consistent with the morphology found in Aulacospira depressa, sharing the same dental arrangement and formula.[4]
Distribution
This species occurs in Thailand on limestome rocks.
References
- ^ Aulacospira smaesarnensis Dumrongrojwattana, 2008. 2 February 2026. Retrieved through: World Register of Marine Species.
- ^ "Endemic Land snails of Sri Lanka". slendemics. Retrieved 2 November 2016.
- ^ "Species: Aulopoma itieri F.E. Guérin-Méneville, 1847 – ID: 1093204595". Worldwide Mollusc Species Database. Retrieved 2 November 2016.
- ^ Dumrongrojwattana, P.; Tanmuangpak, K. (2020). "The terrestrial microsnail genus Aulacospira Möllendorff, 1890 (Eupulmonata, Stylommatophora, Hypselostomatidae) in Thailand with key to Thai species". Zookeys. 980: 26. doi:10.3897/zookeys.980.54100. PMC 7642177. Retrieved 31 January 2026. This article incorporates text from this source, which is under a CC BY 4.0 license.
- Dumrongrojwattana, P. (2008). A New species of Aulacospira (Pulmonata: Stylommatophora: Pupillidae) from Eastern Thailand. The Natural History Journal of Chulalongkorn University. 8(1): 57-59