Alvania subareolata
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| Alvania subareolata | |
|---|---|
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| Shell of Alvania subareolata | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. subareolata |
| Binomial name | |
| Alvania subareolata Monterosato, 1869 | |
| Synonyms | |
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Alvania subareolata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1]
The length of the shell varies between 1.8 mm and 3 mm.
The shell is imperforate, translucent and brownish. It is subclathrate by longitudinal riblets crossed by spiral lirae. The shell contains five convex whorls with a deep suture. The columella is arcuate. The basal area is cingulate. The outer lip is thickened externally.[2]