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Rhytididae

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Rhytididae
A live Powelliphanta augusta from the upper Waimangaroa River.
Scientific classification
Kingdom:
Phylum:
Class:
(unranked):
clade Heterobranchia

clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora

informal group Sigmurethra
Superfamily:
Family:
Rhytididae

Pilsbry, 1893
Genera

See text

Synonyms
  • Paryphantinae Godwin-Austen, 1893
  • Occirheneidae Iredale, 1939

Rhytididae is a taxonomic family of medium-sized predatory air-breathing land snails, carnivorous terrestrial pulmonate gastropod molluscs in the superfamily Rhytidoidea.

This family has no subfamilies.

A shell of Powelliphanta hochstetteri hochstetteri.

Anatomy

In this family, the number of haploid chromosomes lies between 26 and 35 (according to the values in this table).[1]

Distribution

This family of land snails has a range which extends from South Africa to New Guinea, some of the higher South Pacific islands, New Zealand[2] and Australia.

The New Zealand genera include Delos, Delouagapia, Paryphanta, Powelliphanta, Rhytida, Wainuia and Schizoglossa. These, however, probably do not form a monophyletic group, as indicated by their differences in their size, shape and radular morphology.[3]

Genera

Genera within the family Rhytididae include:

Life cycle

Eggs of New Zealand's species are generally deposited in leaf mould. Eggs are usually laid from late October to early December, with exception in some species as Powelliphanta spedeni in March.[4]

References

  1. ^ Barker G. M. (2001). Gastropods on Land: Phylogeny, Diversity and Adaptive Morphology. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 139 and 142.
  2. ^ Powell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, ISBN 0-00-216906-1
  3. ^ Murray Efford, Robyn Howitt and Dianne Gleeson (September 2002). "Phylogenetic relationships of Wainuia (Mollusca : Pulmonata)—biogeography and conservation implications" (PDF). Journal of the Royal Society of New Zealand. 32 (3): 445–456. doi:10.1080/03014223.2002.9517703. Archived from the original (PDF) on 2008-09-06. {{cite journal}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)CS1 maint: year (link)
  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 75(1945-46): 54-57.

Further reading