Powelliphanta traversi
Powelliphanta traversi, known as Travers' land snail,[1] is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. This species is endemic to the North Island of New Zealand between Wellington and Lake Waikaremoana.
There are six subspecies,[2] all of which are listed by the New Zealand Department of Conservation as threatened:[3]
- Powelliphanta traversi florida Powell, 1946 – Nationally Endangered
- Powelliphanta traversi latizona Powell, 1949 – Nationally Endangered
- Powelliphanta traversi koputaroa Powell, 1946 – Nationally Endangered
- Powelliphanta traversi otakia Powell, 1946 – Nationally Critical
- Powelliphanta traversi tararuaensis Powell, 1938 – Nationally Endangered
- Powelliphanta traversi traversi Powell, 1930 – Nationally Endangered
The eggs are oval and seldom constant in dimensions 10 × 8.75 mm, 9.5 × 8.5 mm, 10 × 8 mm, 11 × 9 mm, 10.75 × 9 mm.[4]
See also
References
- ^ a b Mollusc Specialist Group (1996). "Paryphanta traversi". IUCN Red List of Threatened Species. Version 2009.2. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/16409. Retrieved March 4, 2010.
- ^ Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
- ^ "New Zealand Threat Classification System lists - 2002 - Terrestial (sic) invertebrate - part one". New Zealand Department of Conservation. 2002. http://www.doc.govt.nz/templates/MultipageDocumentPage.aspx?id=39593. Retrieved March 3, 2010.
- ^ O'Connor A. C. (June) 1945. Notes on the Eggs of New Zealand Paryphantidae, With Description of a New Subgenus. Transactions of the Royal Society of New Zealand, volume 5, 1945-46, pages 54-57.