Placostylus ambagiosus

Placostylus ambagiosus
A shell of the subspecies Placostylus ambagiosus priscus
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia

clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra

Superfamily: Orthalicoidea
Family: Bothriembryontidae
Subfamily: Placostylinae
Genus: Placostylus
Species: P. ambagiosus
Binomial name
Placostylus ambagiosus
Suter, 1906[2][3]

Placostylus ambagiosus is a species of flax snail (Māori: pupuharakeke), a large air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bothriembryontidae.

Description

This snail has a large (60–95 millimetres or 2.4–3.7 inches long) shell, which is heavily calcified.

Distribution

This land snail species occurs in New Zealand. It is restricted to a small fragmented area of Northland Region, including the Aupouri Peninsula and Motuopao Island.[4]

Hypothetical subspecies

In 2011, Buckley et al.[5] established, based on molecular phylogeny research and shell morphology research, that there are in fact no subspecies of Placostylus ambagiosus.[5] However, in the past, what were thought to be eight extant subspecies and a number of undescribed but distinct populations were named;[4] 6 of these "subspecies" are now extinct[6] (marked with a †); conservation statuses were given according to the New Zealand Threat Classification System for the extant taxa: "nationally critical" and "nationally endangered":[7]

References

  1. ↑ Sherley G. (1996). "Placostylus ambagiosus". IUCN Red List of Threatened Species. Version 2009.2. International Union for Conservation of Nature. Retrieved February 6, 2010.
  2. ↑ Suter H. (1906). J. de Conch. 54: 253, plate 8, figure 1-3.
  3. ↑ "Object: Placostylus ambagiosus Suter, 1907; lectotype; lectotype of Placostylus hongii ambagiosus Suter, 1907". Museum of New Zealand Te Papa Tongarewa. Retrieved February 5, 2010.
  4. 1 2 I. A. N. Stringer & E. A. Grant (2007). Captive rearing and biology of the endangered giant land snails Placostylus ambagiosus and P. hongii (Pulmonata: Bulimulidae) (PDF). DOC Research & Development Series 279. Department of Conservation. ISBN 978-0-478-14288-4.
  5. 1 2 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.
  6. ↑ "Extinct Species of New Zealand". Natural Heritage Collection. Retrieved February 5, 2010.
  7. ↑ "Terrestrial invertebrate - part one". New Zealand Threat Classification System. Department of Conservation. 2002.

Further reading

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.