''Discula'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of small
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 ...
s,
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 ...
s in the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
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 ...
.
Shell description
The shell of these snails is shaped rather like a
discus, or a
lens
A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
, with a sharp edge around the periphery of the whorls.
Species
Species in the genus ''Discula'' include:
* ''
Discula attrita
''Discula'' is a genus of small land snails, Terrestrial animal, terrestrial pulmonate gastropod mollusks in the family (biology), family Geomitridae.
Shell description
The shell of these snails is shaped rather like a discus, or a lens (optics ...
''
* ''
Discula bulverii
''Discula bulverii'' is a species of air-breathing land snail, a terrestrial animal, terrestrial pulmonate gastropod mollusk in the family Geomitridae.
This species is Endemism, endemic to Porto Santo Island, List of non-marine molluscs of Made ...
''
* ''
Discula calcigena''
* ''
Discula cheiranthicola
''Discula cheiranthicola'' is a species of air-breathing land snail, a terrestrial animal, terrestrial pulmonate gastropod mollusk in the family Geomitridae.
This species is Endemism, endemic to List of non-marine molluscs of Madeira, Madeira, ...
''
* ''
Discula cockerelli''
* ''
Discula leacockiana
''Discula leacockiana'' is a species of small land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Distribution
This species occurs in Europe.
Conservation status
This species of snail is mentioned in annexes II and ...
''
* ''
Discula lyelliana
''Discula lyelliana'' is a species of air-breathing land snail, a terrestrial animal, terrestrial pulmonate gastropod mollusk in the family Geomitridae.
''Discula lyelliana'' was listed as Critically endangered possibly extinct in the ''2011 IU ...
''
* ''
Discula polymorpha
''Discula'' is a genus of small land snails, Terrestrial animal, terrestrial pulmonate gastropod mollusks in the family (biology), family Geomitridae.
Shell description
The shell of these snails is shaped rather like a discus, or a lens (optics ...
''
* ''
Discula pulvinata''
*''
Discula rotula''
* ''
Discula tabellata
''Discula tabellata'' is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Distribution
This species occurs in Madeira, Portugal.
Shell description
The shell of these snails is ...
''
* ''
Discula tectiformis''
* ''
Discula testudinalis''
* ''
Discula tetrica''
synonyms:
* ''Discula bicarinata'' is a synonym for ''
Hystricella bicarinata'' (Sowerby, 1824)
* ''Discula echinulata'' is a synonym for ''
Hystricella echinulata''
* ''Discula oxytropis'' is a synonym for ''
Hystricella oxytropis''
* ''Discula turricula'' is a synonym for ''
Hystricella turricula'' (R. T. Lowe, 1831)
Note
The name ''Discula'' is ambiguous and also refers to a genus of
fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...
in the family
Valsaceae
Valsaceae is a family of sac fungi in the Diaporthales order.
Genera
*''Amphiporthe''
*''Apioplagiostoma''
*'' Apioporthella''
*''Chadefaudiomyces''
*''Cryptascoma''
*''Cytospora''
*''Diaporthella''
*''Ditopellina''
*''Durispora''
*''Hy ...
to which belongs the plant pathogen
dogwood
''Cornus'' is a genus of about 30–60 species of woody plants in the family Cornaceae, commonly known as dogwoods, which can generally be distinguished by their blossoms, berries, and distinctive bark. Most are deciduous trees or shrub ...
anthracnose
A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticultur ...
''
Discula destructiva
''Discula destructiva'' is a fungus in the family Gnomoniaceae which causes dogwood anthracnose, affecting populations of dogwood trees native to North America.
It was introduced to the United States in 1978 and is distributed throughout the Ea ...
''.
References
Further reading
*
*
External links
{{Geomitridae-stub