Powelliphanta lignaria

Powelliphanta lignaria
Powelliphanta lignaria lusca shell
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): Pulmonata
Family: Rhytididae
Genus: Powelliphanta
Species: P. lignaria
Binomial name
Powelliphanta lignaria
(Hutton, 1888)
Synonyms[1]

Paryphanta lignaria Hutton, 1888

Powelliphanta lignaria johnstoni at Charming Creek, Buller District, New Zealand
Powelliphanta lignaria johnstoni, Mokihinui River area

Powelliphanta lignaria, known as one of the amber snails, is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. The eggs of P. lignaria are oval and seldom constant in dimensions 10 × 8.25, 9 × 7.75, 9 × 8, 8.75 × 7.75 mm.[2]

P. lignaria is endemic to the west coast of the South Island of New Zealand. There are seven subspecies,[3] all of which are listed by the New Zealand Department of Conservation as threatened:[4]

  • Powelliphanta lignaria johnstoni Powell, 1946 – Nationally Endangered
  • Powelliphanta lignaria lignaria Hutton, 1888 – Nationally Vulnerable
  • Powelliphanta lignaria lusca Powell, 1949 – Nationally Vulnerable
  • Powelliphanta lignaria oconnori Powell, 1938 – Nationally Vulnerable
  • Powelliphanta lignaria rotella Powell, 1938 – Nationally Endangered
  • Powelliphanta lignaria ruforadiata Powell, 1949 – Nationally Endangered
  • Powelliphanta lignaria unicolorata Powell, 1930 – Nationally Vulnerable

References

  1. 1 2 Mollusc Specialist Group (1996). "Paryphanta lignaria". The IUCN Red List of Threatened Species. IUCN. 1996: e.T16404A5721715. doi:10.2305/IUCN.UK.1996.RLTS.T16404A5721715.en. Retrieved 27 December 2017.
  2. ↑ A. C. O'Connor (1945). "Notes on the eggs of New Zealand Paryphantidae, with description of a new subgenus". Transactions of the Royal Society of New Zealand. 5: 54–57.
  3. ↑ Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd., Auckland, New Zealand 1979 ISBN 0-00-216906-1
  4. ↑ "New Zealand Threat Classification System lists - 2002 - Terrestrial invertebrate - part one". New Zealand Department of Conservation. 2002. Archived from the original on October 15, 2008. Retrieved March 3, 2010.


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