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''Powelliphanta lignaria'', known as one of the amber snails, is a species of large, carnivorous
''Powelliphanta lignaria'', known as one of the amber snails, is a species of large, carnivorous land snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...
, a terrestrial pulmonate
Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
in the family Rhytididae. The eggs of ''P. lignaria'' are oval and seldom constant in dimensions 10 × 8.25, 9 × 7.75, 9 × 8, 8.75 × 7.75 mm.
''P. lignaria'' is endemic to the west coast of the South Island
The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...
of New Zealand. There are seven subspecies, all of which are listed by the New Zealand Department of Conservation as threatened:
*''Powelliphanta lignaria johnstoni'' Powell
Powell may refer to:
People
* Powell (surname)
* Powell (given name)
* Powell baronets, several baronetcies
*Colonel Powell (disambiguation), several military officers
*General Powell (disambiguation), several military leaders
*Governor Powell (di ...
, 1946 – ''Nationally Endangered''
*''Powelliphanta lignaria lignaria'' Hutton, 1888 – ''Nationally Vulnerable''
*''Powelliphanta lignaria lusca'' Powell, 1949 – ''Nationally Vulnerable''
*''Powelliphanta lignaria oconnori'' Powell, 1938 – ''Nationally Vulnerable''
*''Powelliphanta lignaria rotella'' Powell, 1938 – ''Nationally Endangered''
*''Powelliphanta lignaria ruforadiata'' Powell, 1949 – ''Nationally Endangered''
*''Powelliphanta lignaria unicolorata'' Powell, 1930 – ''Nationally Vulnerable''
References
Powelliphanta Gastropods described in 1888 Gastropods of New Zealand Taxa named by Frederick Hutton (scientist) Taxobox binomials not recognized by IUCN Endemic fauna of New Zealand Endemic molluscs of New Zealand {{Rhytididae-stub