Powelliphanta lignaria

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]

Powelliphanta lignaria
Powelliphanta lignaria lusca shell

Data Deficient  (IUCN 2.3)[1]
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, Mōkihinui River area

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. Mollusc Specialist Group (1996). "Paryphanta lignaria". IUCN Red List of Threatened Species. 1996: e.T16404A5721715. doi:10.2305/IUCN.UK.1996.RLTS.T16404A5721715.en.
  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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