''Allopeas micra'' 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 ...

. ;Subspecies: * ''Allopeas micra mazatlanicum'' (Pilsbry, 1931) * ''Allopeas micra micra'' (A. d'Orbigny, 1835)

Description

The shell is elongated and turreted, thin and translucent. It shows very pronounced striations formed by small, sharp, raised ribs. It is nearly umbilicate, with a long, almost conical

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spire ...

that ends in an obtuse

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 ...

. The shell is composed of 8

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 that are slightly rounded. The

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 oval with sharp, well-defined margins, and the

columella Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire. His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...

is straight. The shell exhibits a yellowish-white color.

Distribution

The distribution of ''Allopeas micra'' includes: * West Indies * from

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

Dominica Dominica, officially the Commonwealth of Dominica, is an island country in the Caribbean. It is part of the Windward Islands chain in the Lesser Antilles archipelago in the Caribbean Sea. The capital, Roseau, is located on the western side of t ...

- introduced. First reported in 2009.Robinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''

Zoologische Mededelingen ''Zoologische Mededelingen'' was a peer-reviewed open access scientific journal publishing papers and monographs on animal systematics. The publisher was the National Museum of Natural History Naturalis in the Netherlands. The first issue appeared ...

'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13

Synonyms

* ''Achatina lucida'' Poey, 1852 junior subjective synonym * ''Bulimus contractus'' Poey, 1853 junior subjective synonym * ''Bulimus octonoides'' C. B. Adams, 1845 junior subjective synonym * ''Bulimus tryonianus'' Tate, 1870 junior subjective synonym * ''Helix (Cochlitoma) micra'' A. d'Orbigny, 1835 superseded combination * ''Helix micra'' A. d'Orbigny, 1835 superseded combination * ''Lamellaxis (Allopeas) micron'' (A. d'Orbigny, 1835) incorrect grammatical agreement of specific epithet * ''Lamellaxis (Allopeas) micrus'' (A. d'Orbigny, 1835) incorrect grammatical agreement of specific epithet * ''Lamellaxis (Leptopeas) micra'' (A. d'Orbigny, 1835) superseded combination * ''Lamellaxis micra'' (A. d'Orbigny, 1835) superseded combination * ''Lamellaxis micrus'' A. d'Orbigny, 1835 incorrect grammatical agreement of specific epithet * ''Leptopeas micra'' (A. d'Orbigny, 1835) superseded combination * ''Opeas dresseli'' (K. Miller, 1879) junior subjective synonym * ''Opeas lucida'' (Poey, 1852) unaccepted * ''Opeas micra'' (A. d'Orbigny, 1835) superseded combination * ''Opeas octonoides'' (C. B. Adams, 1845) junior subjective synonym * ''Opeas tryonianum'' (Tate, 1870) junior subjective synonym * ''Opeas tryonianum var. subovale'' E. von Martens, 1898 junior subjective synonym * ''Stenogyra (Opeas) dresseli'' K. Miller, 1879 junior subjective synonym * ''Stenogyra (Opeas) octonoides'' (C. B. Adams, 1845) junior subjective synonym * ''Stenogyra octonoides'' (C. B. Adams, 1845) junior subjective synonym

References

* * * * * * *

External links

* * * * * * * * {{Taxonbar, from=Q3076481 micra Gastropods described in 1835