Alcadia mammilla
From Wikipedia, the free encyclopedia
| Alcadia mammilla | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Neritimorpha |
| Order: | Cycloneritida |
| Family: | Helicinidae |
| Genus: | Alcadia |
| Species: | A. mammilla |
| Binomial name | |
| Alcadia mammilla Weinland, 1862 | |
| Synonyms[1] | |
| |
Alcadia mammilla is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.[1]
The height of the shell attains 6.5 mm (0.26 in), its greatest diameter 7.5 mm (0.30 in).[citation needed]
(Original description in Latin) The conical shell is rather solid and slightly striated. it is scarcely shiny, with various marbling and banding in whitish and reddish hues. The spire has a convex-conical shape, ending in a pale apex. There are 5 somewhat convex whorls, with the body whorl deflected at the front and slightly flattened at the base. The columella is short and thread-like, ending at the base with a small denticle and emitting a thin callus. The aperture is oblique and somewhat triangular-semioval. The peristome is thin, with the right margin simple at the top, then dilated and expanded, featuring a distinct sinus at the base separated from the columellar tooth.[2]
