Powelliphanta spedeni

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

Powelliphanta spedeni
Powelliphanta spedeni lateumbilicata at Te Papa
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily:
Rhytidoidea
Family:
Rhytididae
Genus:
Powelliphanta
Species:
P. spedeni
Binomial name
Powelliphanta spedeni
(Powell, 1932)

Distribution

This species is endemic to the South Island of New Zealand. There are two subspecies:[1]

Description

The shell of Powelliphanta spedeni reaches a maximum size of 40 mm.[2]

Life cycle

Powelliphanta spedeni produces an egg up to the size of 11.5 mm.[2] Shape of the eggs is oval and seldom constant in dimensions 11.5 × 9 mm, 11 × 9 mm, 9 × 7.75 mm.[2] Its eggs are laid in March.[2]

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References
  1. Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  2. 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 75, 1945-46, pages 54-57.


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