Zemelanopsis trifasciata

Zemelanopsis trifasciata is a species of freshwater snail in the family Melanopsidae. It is endemic to New Zealand, where it is found in fresh and brackish water habitat throughout the country.[3]

Zemelanopsis trifasciata
Shells of Zemelanopsis trifasciata

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Sorbeoconcha
Superfamily:
Cerithioidea
Family:
Melanopsidae
Genus:
Zemelanopsis
Species:
Z. trifasciata
Binomial name
Zemelanopsis trifasciata
(Gray, 1843)[2]
Synonyms
  • Melanopsis trifasciatus Gray, 1843 (original combination)
  • Melanopsis trifasciata (Gray, 1843)
  • Melanopsis zelandica Gould, 1843
  • Melanopsis strangei Reeve, 1860

The type locality is "Waitanga Falls", in Waitangi, Northland, Bay of Islands, New Zealand.[2]

Description

The width of the shell is 11–17 mm. The height of the shell is 18–30 mm.[4]

Ecology

It lives in streams and rivers near their estuaries.[1]

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References
  1. Clark, S. & S. Moore. 2013. Melanopsis trifasciata. The IUCN Red List of Threatened Species. Version 2014.2. Downloaded on 28 August 2014.
  2. Gray J. E. (1843). Catalogue of the species of Mollusca and their Shells, which have hitherto been recorded as found at new Zealand, with the description of some lately discovered Species. 228-265, page 263. In: Dieffenbach E. (1843). Travels in New Zealand, II., London: J. Murray.
  3. Marshall, B.; Bouchet, P. (2014). Zemelanopsis trifasciata (Gray, 1843). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581166 on 2014-11-10
  4. Suter H. (1913). Manual of the New Zealand Mollusca. Wellington, 1120 pp., pages 236-237.

Further reading
  • Bedford J. J. (1972). "Osmoregulation in Melanopsis trifasciata II. The osmotic pressure and the principal ions of the hemocoelic fluid". Physiological zoology 45(3): 261-269.
  • Bilgin F. H. (1973). "Studies on the functional anatomy of Melanopsis praemorsa (L.) and Zemelanopsis trifasciata (Gray)". Proceedings Malacological Society of London 40: 379.
  • Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  • Smith E. A. (1844). Mollusca. page 3, plate 1, fig. 22, 18. In: Richardson J. & Gray J. E. (eds.) The zoology of the voyage of the H.M.S. Erebus & Terror, under the command of Captain Sir James Clark Ross, during the years 1839 to 1843. London.
  • Suter H. (1915). Manual of the New Zealand Mollusca. Atlas of plates. John Mackay, Government printer, Wellington. plate 39, figure 11.
  • Winterbourn M. J. (1973). A guide to the freshwater mollusca of New Zealand. Tuatara 20(3) 142.


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