''Zarateana arganica'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of 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 ...

, a

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

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 ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the family

Geomitridae Geomitridae is a Taxonomy (biology), taxonomic Family (biology), family of small to medium-sized air-breathing land snails, Terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.MolluscaBase eds. (2021). M ...

Distribution

This species is endemic to mainland

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

, being found in the north of the

Iberian Peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...

. This species ranges from northwest

Huesca Huesca (; an, Uesca) is a city in north-eastern Spain, within the autonomous community of Aragon. It is also the capital of the Spanish province of the same name and of the comarca of Hoya de Huesca. In 2009 it had a population of 52,059, almo ...

to north

Burgos Burgos () is a city in Spain located in the autonomous community of Castile and León. It is the capital and most populated municipality of the province of Burgos. Burgos is situated in the north of the Iberian Peninsula, on the confluence of t ...

, its range coinciding with the transition area from the Cantabrian

temperate broadleaf and mixed forest Temperate broadleaf and mixed forest is a temperate climate terrestrial habitat type defined by the World Wide Fund for Nature, with broadleaf tree ecoregions, and with conifer and broadleaf tree mixed coniferous forest ecoregions. These for ...

, a part of "

Green Spain Cantabrian Coast is the name given to a lush natural region in Northern Spain, stretching along the Atlantic coast from the border with Portugal to the border with France. The region includes nearly all of Galicia, Asturias, and Cantabria, in ...

", to the Mediterranean faunal zones.

Description

The shell of ''Zarateana arganica'' is greyish white in color. There are brown color bands on the shell which resemble horn. The shell is lustrous and has fine striae. Fresh shells have short structures resembling hairs."Species summary for ''Candidula arganica''"
AnimalBase, last modified 4 January 2014, accessed 12 December 2014. There are

whorls A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral d ...

which are, to some extent, convex in shape. The

last whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...

is not much broader than precedent whorls. The main opening of the shell or the

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ...

is sometimes quadrangular in shape. There is a sharp

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

inside the aperture which is white in color. The umbilicus is clearly visible, open and wide. The width of the shell is 4.5-5.5 mm. The height of the shell is 2.5–3 mm.

Habitat

''Z. arganica'' is a terrestrial mollusc. It lives in open places which receive a lot of

sunlight Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when t ...

, primarily in

meadow A meadow ( ) is an open habitat, or field, vegetated by grasses, herbs, and other non-woody plants. Trees or shrubs may sparsely populate meadows, as long as these areas maintain an open character. Meadows may be naturally occurring or artifi ...

s or grasslands. However, it is also found in riverbanks and forests.

Interaction with humans and threats

''Zarateana arganica'' is not used by humans for food or any other activity. Hence no trading activity is associated with this species.

Urban planning Urban planning, also known as town planning, city planning, regional planning, or rural planning, is a technical and political process that is focused on the development and design of land use and the built environment, including air, water, ...

and activities associated with the

primary sector of the economy The primary sector of the economy includes any industry involved in the extraction and production of raw materials, such as farming, logging, fishing, forestry and mining. The primary sector tends to make up a larger portion of the economy in d ...

such as

agriculture Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to ...

and

forestry Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests, woodlands, and associated resources for human and environmental benefits. Forestry is practiced in plantations and natural stands. Th ...

pose the main risks to this species. The sub-populations of the species also face threat from fire. In the

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...

, Z''. arganica'' is listed as "Least Concern". According to the IUCN, "Although this species has a restricted range, it does not meet either population decline or range decline criteria." No population study was done on Z''. arganica''. However, according to the

, the population trend is considered to be stable.

References

External links

* http://luisjavierchueca.com/research-3/candidula-s-l/
Servain, G. (1880). Etude sur les Mollusques recueillis en Espagne et au Portugal. Saint-Germain: Imprimerie D. Bardin. 172 pp
{{Commons category arganica Gastropods described in 1880