Powelliphanta rossiana patrickensis

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Powelliphanta rossiana patrickensis
A Powelliphanta of unknown species.
A Powelliphanta of unknown species.
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Pulmonata
Family: Rhytididae
Genus: Powelliphanta
Species: P. rossiana
Subspecies: P. rossiana patrickensis
Trinomial name
Powelliphanta rossiana patrickensis
Powell, 1949

Powelliphanta rossiana patrickensis, known as one of the amber snails, is a subspecies of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.

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[edit] Distribution

This subspecies is endemic to the South Island of New Zealand. It is found at altitudes of about 500 to 1,000 m under tussock in moist ground between Mount Rochfort and Mount Frederick plateaux several kilometres north of Westport on the west coast of the South Island.

[edit] Shell description

The shell has a lower spire than other Powelliphanta rossiana subspecies but not so flattened as in Powelliphanta rossiana fletcheri. There are also more regular and more distinct axial streaks than in Powelliphanta rossiana fletcheri.

The shell diameter is up to 45 mm, and the height is up to 33 mm.

[edit] Conservation status

Powelliphanta rossiana patrickensis is classified by the New Zealand Department of Conservation as being Nationally Endangered.

[edit] References