Gundlachia lucasi
From Wikipedia, the free encyclopedia
| Gundlachia lucasi | |
|---|---|
 | |
| Gundlachia lucasi, Suter. 3×2 mm | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Superorder: | Hygrophila |
| Family: | Planorbidae |
| Genus: | Gundlachia |
| Species: | G. lucasi |
| Binomial name | |
| Gundlachia lucasi Suter, 1905 | |
Gundlachia lucasi is a species of small freshwater snail or limpet, an aquatic pulmonate gastropod mollusk or micromollusk in the family Planorbidae.
Shell obliquely conical, thin, semitransparent, horn-colour, covered by a blackish coating. Apex inclined to the right, situated at the posterior third of the length; convex anteriorly, slightly concave on the posterior slope; a few concentric lines of growth. Aperture oval; peritreme sharp, extremely fragile.[2]
The shell length is up to 4 mm, the width up to 2.75 mm, and height up to 1.5 mm.[3]
Anatomy
These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill as, in their non-tidal habitat, these limpets never reach the surface for air.