''Spelaeoconcha paganettii'' is a species of very small air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

, terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusks in the superfamily Pupilloidea. The genus is monotypic, as also is the family.

Taxonomy

The family Spelaeoconchidae is classified within the informal group

Orthurethra Orthurethra is a clade of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora. In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, Orthurethra is treated as an informal group and subcla ...

, itself belonging to the

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

Stylommatophora Stylommatophora is an orderPhilippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong. 2017. Revised Classification, Nomenclator and Typification ...

within the clade

Eupulmonata Eupulmonata is a taxonomic clade of air-breathing snails. The great majority of this group are land snails and slugs, but some are marine and some are saltmarsh snails that can tolerate salty conditions. Linnean taxonomy *Suborder Eupulmonat ...

(according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). The family Spelaeoconchidae has no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). ''Spelaeoconcha paganettii'' is the only species in the genus ''Spelaeoconcha'' and ''Spelaeoconcha'' is the only genus in the family Spelaeoconchidae. ''Spelaeoconcha'' is the type genus of the family Spelaeoconchidae.

Distribution

The distribution of ''Spelaeoconcha paganettii'' includes Croatia, Bosnia and Hercegovina.

Description

The shell is whitish or pale yellowish, almost smooth and very shiny. The shell has 7 not very convex whorls. The last whorl is ascending shortly before the aperture. The aperture is without teeth. Apertural margin is thickened except on upper side, and with a wavy contour seen from the side. Umbilicus is open but very narrow, only partly covered by columellar margin of the aperture. The width of the shell is 2.5–2.6 mm. The height of the shell is 5.4–6.1 mm.

Ecology

This small snail was found under stone rubble, on blackish-brown soil in a cave.

References

This article incorporates public domain text from the reference "Species summary for ''Spelaeoconcha paganettii''"
AnimalBase, last modified 12 August 2008, accessed 5 April 2011. {{Taxonbar, from2=Q291744, from1=Q18585334, from3=Q27982664 Gastropods described in 1901 Monotypic gastropod genera