Discula testudinalis a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of small land snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

, a terrestrial

Terrestrial animal

Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...

 pulmonate gastropod mollusk in the family Hygromiidae

Hygromiidae

Hygromiidae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.-Anatomy:...

, the hairy snails and their allies.

Shell description

The shell of these snails is shaped like a discus

Discus

Discus, "disk" in Latin, may refer to:* Discus , a progressive rock band from Indonesia* Discus , a fictional character from the Marvel Comics Universe and enemy of Luke Cage* Discus , a freshwater fish popular with aquarium keepers...

, or a lens

Lens (optics)

A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element...

, with a sharp edge around the periphery of the whorls.

Conservation status

This species is critically endangered, as mentioned in annex IV of Habitats Directive.