''Allopeas clavulinum'',

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often con ...

the spike awlsnail, is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of small, tropical, 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 molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...

, a

terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. 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 o ...

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 inclu ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the family

Achatinidae Achatinidae (New Latin, from Greek "''agate''") is a family of medium to large sized tropical land snails, terrestrial pulmonate gastropod mollusks from Africa. Well known species include '' Achatina achatina'' the Giant African Snail, and '' L ...

. This species is also known as ''Lamellaxis clavulinus''.

Subspecies

* ''Allopeas clavulinum kyotoense'' (Pilsbry & Hirase, 1904) - Japan Earlier the subspecies was regarded as a standalone species: ''Allopeas kyotoense'' (Pilsbry & Hirase, 1904) * ''Allopeas clavulinum obesispira'' (Pilsbry & Y. Hirase, 1904) * ''Allopeas clavulinum pyrgula'' (Schmacker & O. Boettger, 1891): synonym of ''

Opeas pyrgula ''Opeas'' is a genus of small, tropical, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. ''Opeas'' is the type genus of the subfamily Opeatinae. Species The genus ''Opeas'' includes the following ...

'' Schmacker & O. Boettger, 1891 (superseded combination)

Description

(Original description in Latin) The turreted shell is delicate, glassy, and translucent with a polished sheen. It features six convex

whorl 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). In nature File:Photograph and axial plane floral diagra ...

s, with the

body whorl The body whorl is part of the morphology (biology), morphology of the gastropod shell, 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 ...

being the largest. The oval

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

is angular at the top and left sides. The peristome is simple and sharp-edged. The shell has a blunt

apex The apex is the highest point of something. The word may also refer to: Arts and media Fictional entities * Apex (comics) A-Bomb Abomination Absorbing Man Abraxas Abyss Abyss is the name of two characters appearing in Ameri ...

Distribution

The non-indigenous distribution of this species has a wide distribution in the tropics and subtropics of East Africa. It is introduced elsewhere: *

Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...

, as a "hothouse alien". *

the Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

, where it occurs as a "hothouse alien". * India *

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

"''Lamellaxis clavulinus'' (Potiez & Michaud)"
accessed 11 October 2010. * Philippines

References

* * *

External links

* * * * {{Taxonbar, from=Q3728680 clavulinum Gastropods described in 1838 Gastropods of Lord Howe Island