Powelliphanta traversi

Powelliphanta traversi
Powelliphanta traversi otakia in Te Papa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Rhytididae
Genus: Powelliphanta
Species:
P. traversi
Binomial name
Powelliphanta traversi
Powell, 1930
Powelliphanta traversi traversi at Lake Papaitonga
Powelliphanta traversi traversi in Prouse Bush, Levin, New Zealand

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]

Shells of P. traversi that have been predated by brushtail possums

See also

References

Wikimedia Commons has media related to Powelliphanta traversi.
  1. ^ a b Mollusc Specialist Group (1996). "Paryphanta traversi". IUCN Red List of Threatened Species. 1996: e.T16409A5703709. doi:10.2305/IUCN.UK.1996.RLTS.T16409A5703709.en. Retrieved 27 December 2017.
  2. ^ Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd., Auckland, New Zealand 1979 ISBN 0-00-216906-1
  3. ^ "Powelliphanta snails". New Zealand Department of Conservation. Retrieved 9 December 2021.
  4. ^ 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.