Aegista omma
| Aegista omma | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Camaenidae |
| Genus: | Aegista |
| Species: | A. omma
|
| Binomial name | |
| Aegista omma (Pilsbry & Y. Hirase, 1904)
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| |
| Synonyms[1] | |
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Aegista omma is a species of air-breathing land snails, a terrestrial pulmonate gastropod in the family Camaenidae.[1]
Description[edit]
The diameter of the shell attains 19 mm, its height 11.5 mm.[2]
This shell closely resembles Aegista oculus (L. Pfeiffer, 1850). The shell is yellowish olivaceous-brown, densely obliquely striated above, and more glossy and smoother below. The shell contains seven slightly convex whorls that enlarge slowly and regularly. The first two whorls are nearly smooth. The body whorl is slightly deflexed in front and obtusely angular at the periphery, with a very convex base. The deep and ample umbilicus is nearly one-third the diameter of the shell. The last half-whorl enlarges more rapidly. The aperture is rather small, hardly larger than the umbilicus, oblique, and rounded, with the preceding whorl excising about one-fourth of the circle. The peristome is narrowly reflexed throughout, and the columellar margin is very steeply ascending and hardly dilated.[2]
Distribution[edit]
This shell occurs in Japan.[2]
References[edit]
- ^ a b WoRMS. "Aegista omma (Pilsbry & Y. Hirase, 1904)". World Register of Marine Species. Retrieved 21 May 2024.
- ^ a b c Pilsbry, H. A.; Hirase, Y. (1904). "Descriptions of new land shells of the Japanese Empire". Proceedings of the Academy of Natural Sciences of Philadelphia. 56: 616–638.
This article incorporates text from this source, which is in the public domain.
- Minato, H. (1988). A systematic and bibliographic list of the Japanese land snails. H. Minato, Shirahama, 294 pp., 7 pls.
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