Austrocochlea constricta

Austrocochlea constricta
Drawing with two views of a shell of Austrocochlea constricta
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Trochoidea (superfamily)
Family: Trochidae
Genus: Austrocochlea
Species: A. constricta
Binomial name
Austrocochlea constricta
(Lamarck, 1822) [1]
Synonyms[2]
  • Austrocochlea obtusa Iredale, T. & McMichael, D.F. 1962
  • Austrocochlea porcata Iredale, T. & McMichael, D.F. 1962
  • Austrocochlea torri Cotton & Godfrey, 1934
  • Labio porcata Adams, 1853
  • Monodonta constricta Lamarck, 1822
  • Monodonta zebra Menke, 1829
  • Trochocochlea extenuatus Fischer, 1878
  • Trochococlea multicarinata Chenu, 1859
  • Trochus conctrictus (Lamarck, 1822)
  • Trochus obtusa Dillwyn, 1817
  • Trochus obtusus Hedley, C. 1917
  • Trochus taeniatus Quoy & Gaimard, 1834

Austrocochlea constricta, common name the common periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2][3]

Description

The height of the shell varies between 15 mm and 32 mm, its diameter between 22 mm and 28 mm. The thick, solid shell is imperforate. Its color is a lusterless ashen or whitish, obscurely marked with black zigzag lines and stripes, or with spiral articulated zones or with spiral stripes of black. Sometimes it is nearly unicolored. The spire is conical with an acute apex. The about five whorls are convex. The first one is eroded, the penultimate is very strongly spirally tricostate. The body whorl has about seven strong carinae. The aperture is oblique. The outer and basal lips are either thick and multilirate within, or rather thin and slightly furrowed at the places of the principal carinae. The short columella is oblique, subdentate at its base and at the insertion spreading in a strong callus upon the parietal wall.[4]

Distribution

This marine species is endemic to Australia and occurs off New South Wales, South Australia, Tasmania, Victoria and Western Australia

References

  1. Lamarck, J.B. 1822. Histoire naturelle des Animaux sans Vertèbres. Paris : J.B. Lamarck Vol. 7 711 pp
  2. 1 2 Bouchet, P. (2012). Austrocochlea constricta (Lamarck, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546938 on 2012-11-23
  3. Donald K.M., Kennedy M. & Spencer H.G. (2005) The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA sequences. Molecular Phylogenetics and Evolution 37: 474-483.
  4. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Monodonta (Austrocochlea) constricta)

External links

External identifiers for Austrocochlea constricta
Encyclopedia of Life 4796532
NCBI 319492
WoRMS 546938
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