Powelliphanta traversi

Powelliphanta traversi
Powelliphanta traversi otakia in Te Papa
Conservation status
Data Deficient  (IUCN 2.3) [1]
Scientific 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 floridaPowell, 1946 – Nationally Endangered
• Powelliphanta traversi latizonaPowell, 1949 – Nationally Endangered
• Powelliphanta traversi koputaroaPowell, 1946 – Nationally Endangered
• Powelliphanta traversi otakiaPowell, 1946 – Nationally Critical
• Powelliphanta traversi tararuaensisPowell, 1938 – Nationally Endangered
• Powelliphanta traversi traversiPowell, 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]

Description

Powelliphanta traversi are smaller than other species of the same genus. ^[5]

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

See also

• List of non-marine molluscs of New Zealand

References

1. 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.
5. A W B Powell (1946). The Paryphantidae of New Zealand. No. V. Further New Species of Paryphanta, Wainuia and Rhytida.