Alvania tenera
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| Alvania tenera | |
|---|---|
 | |
| Shell of Alvania tenera (specimen at the Natural History Museum, Rotterdam) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. tenera |
| Binomial name | |
| Alvania tenera (Philippi, 1844) | |
| Synonyms | |
| |
Alvania tenera is a species of small sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1]
The length of the shell varies between 1.6 mm and 3 mm.
The thin shell is pellucid and brownish white. it contains 5 whorls, with a deep suture, and strong spiral ridges, of which there are 9-10 on the body whorl. The wider interstices are slightly longitudinally striated. The outer lip is simple and dentate by the ridges.[2]