Placostylus

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Placostylus
Placostylus ambagiosus priscus.JPG
A shell of the subspecies Placostylus ambagiosus priscus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Superfamily: Orthalicoidea
Family: Bothriembryontidae
Subfamily: Placostylinae
Genus: Placostylus
Beck, 1837 [1]
Type species
Limax fibratusMartyn, 1784
Synonyms [2]
  • Bulimus (Placostylus)H. Beck, 1837 (original rank)
  • MaoristylusF. Haas, 1935
  • Placostylus (Maoristylus)Haas, 1935

Placostylus, or flax snails, are a genus of very large, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Bothriembryontidae. [3] [2]

Contents

The shells of the snails in this genus can be as large as 4.5 inches (11 cm) in maximum dimension.

Many species within this genus are now extinct.

Taxonomy

Placostylus is the type genus of the family Placostylidae. [4] It was placed within Placostylidae. [4]

Breure et al. (2010) [5] moved Prestonella and Bothriembryon to Placostylidae. Subsequently, Breure & Romero (2012) [3] confirmed previous results from 2010 and they renamed Placostylidae to Bothriembryontidae. [3]

Distribution

This genus of snails occurs in the Solomon Islands, Vanuatu, New Caledonia, Fiji, Lord Howe Island, and Northland in New Zealand. There are three species in New Zealand and no subspecies. [6]

Species

In former classification, two subgenera were recognized: subgenus Basileostylus Haas, 1935 [7] [8] subgenus Maoristylus Haas, 1935 [9] [8]

Species within this genus include:

Synonyms

Related Research Articles

<span class="mw-page-title-main">Bulimulidae</span> Family of gastropods

Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.

<i>Bulimulus</i> Genus of gastropods

Bulimulus is a genus of small to medium-sized tropical or sub-tropical, air-breathing land snails, pulmonate gastropod mollusks in the subfamily Bulimulinae within the family Bulimulidae.

<i>Assiminea</i> Genus of gastropods

Assiminea is a genus of minute, salt-tolerant snails with an operculum, aquatic gastropod mollusks, or micromollusks, in the family Assimineidae.

<i>Drymaeus</i> Genus of gastropods

Drymaeus is a large genus of medium-sized air-breathing, tropical land snails, terrestrial pulmonate gastropod molluscs in the subfamily Peltellinae of the family Bulimulidae.

<i>Omphalotropis</i> Genus of gastropods

Omphalotropis is a genus of minute salt marsh snails with an operculum, terrestrial gastropod mollusks in the subfamily Omphalotropidinae of the family Assimineidae.

<i>Placostylus eddystonensis</i> Species of gastropod

Placostylus eddystonensis is a species of air-breathing land snail, a pulmonate gastropod mollusk in the family Bothriembryontidae.

<i>Placostylus fibratus</i> Species of gastropod

Placostylus fibratus is a species of large air-breathing land snail, a pulmonate gastropod mollusk in the family Bothriembryontidae. This species is endemic to New Caledonia.

<i>Placostylus porphyrostomus</i> Species of gastropod

Placostylus porphyrostomus is a species of large air-breathing land snail, a pulmonate gastropod mollusk in the family Bothriembryontidae.

<i>Rachis</i> (gastropod) Genus of gastropods

Rachis is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Cerastidae.

<i>Subulina</i> Genus of molluscs

Subulina is a genus of small tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae.

<i>Truncatella</i> (gastropod) Genus of gastropods

Truncatella is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Truncatellidae. These small and minute snails live on land, very close to seawater. They walk with a strange looping action, and the adults have truncated shells. Many of the species are small enough to be considered micromollusks.

<span class="mw-page-title-main">Bothriembryontidae</span> Family of gastropods

Bothriembryontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Orthalicoidea.

<i>Plekocheilus</i> Genus of gastropods

Plekocheilus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amphibulimidae.

<i>Melampus</i> (gastropod) Genus of gastropods

Melampus is a genus of small air-breathing salt marsh snails, pulmonate gastropod mollusks in the family Ellobiidae.

Chloritis is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.

<i>Bostryx</i> Genus of gastropods

Bostryx is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Bulimulidae.

<i>Bocourtia</i> Genus of gastropods

Bocourtia is a genus of tropical air-breathing land snails, a pulmonate gastropod mollusks in the subfamily Bulimulinae of the family Bulimulidae.

<i>Isomeria</i> Genus of gastropods

Isomeria is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Labyrinthidae.

<i>Placocharis</i> Genus of gastropods

Placocharis are a genus of very large, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the subfamily Placostylinae of the family Bothriembryontidae.

<i>Sturanya</i> Genus of gastropods

Sturanya is a genus of land snails with an operculum. It is a genus of terrestrial gastropod mollusks in the subfamily Helicininae of the family Helicinidae.

References

  1. ↑ Beck H. H. (1837). Index Moll. Mus. Ch. Fred. (1): 57.
  2. 1 2 MolluscaBase eds. (2020). MolluscaBase. Placostylus H. Beck, 1837. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818479 on 2020-11-14
  3. 1 2 3 Breure A. S. H. & Romero P. (2012). "Support and surprises: molecular phylogeny of the land snail superfamily Orthalicoidea using a three-locus gene analysis with a divergence time analysis and ancestral area reconstruction (Gastropoda: Stylommatophora)". Archiv für Molluskenkunde: International Journal of Malacology 141(1): 1-20. doi : 10.1127/arch.moll/1869-0963/141/001-020.
  4. 1 2 Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia . 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN   3-925919-72-4. ISSN   0076-2997.
  5. ↑ Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". Basteria 74(1-3): 25-31.
  6. 1 2 3 4 Buckley T. R., Stringer I., Gleeson D., Howitt R., Attanayake D., Parrish R., Sherley G. & Rohan M. (2011). "A revision of the New Zealand Placostylus land snails using mitochondrial DNA and shell morphometric analyses, with implications for conservation". New Zealand Journal of Zoology 38(1): 55-81. doi : 10.1080/03014223.2010.527997.
  7. ↑ Haas (1935). Zool. Anz.109: 189.
  8. 1 2 3 4 5 "Class Gastropoda". New Zealand Mollusca, accessed 26 December 2010.
  9. ↑ Haas (1935). Zool. Anz.109: 188.
  10. ↑ Ponder W. F., Colgan D. J., Gleeson D. M. & Sherley G. H. (2003). "Relationships of Placostylus from Lord Howe Island: an investigation using the mitochondrial cytochrome c oxidase 1 gene". Molluscan Research 23(2): 159-178. doi : 10.1071/MR03001
  11. ↑ ICZN (1992). "Opinion 1662. Limax fibratus Martyn, 1784 and Nerita hebraea Martyn, 1786 (currently Placostylus fibratus and Nerita hebraea; Mollusca, Gastropoda): specific names conserved; and Placostylus Beck, 1837; L. fibratus designated as the type species". Bulletin of Zoological Nomenclature 49: 74-75.
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