Powelliphanta lignaria rotella

Taxobox
name = "Powelliphanta lignaria rotella"


image_caption = A "Powelliphanta" of unknown species.
image_width = 250
status = EN
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Pulmonata
familia = Rhytididae
genus = "Powelliphanta"
species = "P. lignaria"
subspecies = "P. lignaria rotella"
trinomial = "Powelliphanta lignaria rotella"
trinomial_authority = Powell, 1938

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

Distribution

This subspecies is endemic to the South Island of New Zealand. It is only found in the Seddonville area, and on the western slopes of the Glasgow Range.

hell description

The shell has a dense dorsal pattern of dark reddish-brown spiral lines, as well as a few bold widely spaced dark brown axial streaks. There are only faint to obsolete spiral lines on the othwise plain yellowish-olive base.

The shell diameter is up to 42 mm, and height up to 28 mm.

Conservation status

"Powelliphanta lignaria rotella" is classified by the New Zealand Department of Conservation as being "Nationally Endangered".

References

* Powell A. W. B., "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
* [http://www.doc.govt.nz/templates/MultipageDocumentPage.aspx?id=39593 New Zealand Department of Conservation Threatened Species Classification]