Rhytididae is a taxonomic family of medium-sized predatory air-breathing land snails, carnivorous terrestrial pulmonate gastropod molluscs in the superfamily Rhytidoidea.MolluscaBase eds. (2020). MolluscaBase. Rhytididae Pilsbry, 1893. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=816183 on 2020-10-22

This family has three subfamilies: Chlamydephorinae Cockerell, 1935 (1903) Rhytidinae Pilsbry, 1893 Corillinae Pilsbry, 1905

Anatomy In this family, the number of haploid chromosomes lies between 26 and 35 (according to the values in this table).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, . 1-146, cited pages: 139 and 142.

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 ZealandPowell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, 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.

Genera

Genera within the family Rhytididae include:

Afrorhytida Amborhytida Austrorhytida Capitina Delos Delouagapia Diplomphalus Echotrida Hebridelos Macrocycloides Namoitena Nata Natalina Occirhenea Ouagapia Paryphanta Protorugosa Powelliphanta Prolesophanta Pseudomphalus Ancey, 1882 Ptychorhytida Rhytida Rhytidarex Saladelos Schizoglossa Strangesta Tasmaphena Terrycarlessia Torresiropa Victaphanta Vitellidelos Wainuia

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.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.

References

Further reading

Smith B. J. 1998. Family Rhytididae. In: Beesley P. L., Ross G. J. B. & Wells A. ed. Mollusca: the southern synthesis. Fauna of Australia. Vol. 5. Melbourne, CSIRO Publishing. Pp. 1091–1093. Spencer H. G., Brook F. J. & Kenned M. (March 2006) "Phylogeography of Kauri Snails and their allies from Northland, New Zealand (Mollusca: Gastropoda: Rhytididae: Paryphantinae)". Molecular Phylogenetics and Evolution 38(3): 835–842. Te Punga M. T. (1953) "The Paryphantidae and a Cook Strait land bridge". New Zealand Journal of Science and Technology 35: 51–63.

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