Pupilla muscorum
| Pupilla muscorum | |
|---|---|
 |
|
| A right side view of a live Pupilla muscorum | |
 |
|
| Six shells of Pupilla muscorum, scale bar in mm | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Heterobranchia
clade Euthyneura |
| Superfamily: | Pupilloidea |
| Family: | Pupillidae |
| Genus: | Pupilla |
| Species: | P. muscorum |
| Binomial name | |
|
Pupilla muscorum (Linnaeus, 1758) |
|
| Synonyms | |
|
Turbo muscorum Linnaeus, 1758 |
|
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Orthurethra
Turbo muscorum Linnaeus, 1758
Pupa marginata Draparnaud, 1801
Pupilla muscorum, commonly known as the Moss Chrysalis snail, is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Pupillidae.
A variety Pupilla muscorum var. pratensis Clessin, 1871 considered as ecophenotype of Pupilla muscorum was elevated to its species level Pupilla pratensis in 2009.
The shell is usually light brown, varies from reddish brown to horny grey, weakly striated or almost smooth, 5-6.5 weakly convex whorls, suture not very deep (deep suture is presented in Pupilla sterrii - see picture below), aperture usually with well-developed lip, cervical callus strongly developed, like a dam, parietal tooth usually present, palatal tooth sometimes too.
Pupilla muscorum differs from Pupilla pratensis with which it lives sympatrically, in its thicker, smaller and more slender shell, lighter and more variable colour and stronger apertural lip.
The animal of Pupilla muscorum is small, elliptical, dark with lighter sides and foot, upper tentacles not very long, lower tentacles very short.
...
Wikipedia