Trona stercoraria

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Trona stercoraria
Cypraeidae - Trona stercoraria - Senegal-11.JPG
A shell of Trona stercoraria a from Senegal, anterior end towards the right
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Cypraeidae
Genus: Trona
Species:
T. stercoraria
Binomial name
Trona stercoraria
(Linnaeus, 1758)
Synonyms [1]
  • Cypraea fasciataGmelin, 1791
  • Cypraea rattusLamarck, 1810 ·
  • Cypraea stercorariaLinnaeus, 1758 (basionym)
  • Cypraea tumulosaMeuschen, 1778 (Invalid)
  • Peribolus adansoniiBlainville, 1824
  • Trona stercoraria var. rattus(Lamarck, 1810)
  • Trona stercoraria var. tumulosa(Meuschen, 1778)

Trona stercoraria, common name the rat cowry or droppings cowry, is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries. [1]

Contents

Description

The shells of these common cowries reach on average 50–75 millimetres (2.0–3.0 in) of length, with a minimum size of 26 millimetres (1.0 in) and a maximum size of 97 millimetres (3.8 in). They are very variable in pattern and colour. The shape ranges from oval to rhomboidal. The surface is smooth and shiny, the basic color is bluish, greenish or greyish, but it can be completely dark brown or whitish. Normally there is a dense dark brown spotting on the dorsum. The wide margins are usually dark brown and the anterior and posterior canals end into well developed 'rostra'. The base may be purplish, light brown, pinkish or white, with a long and narrow aperture and long brown, beige or white fine teeth with brown spacing. The 'fossula' is considerably protruding.

Distribution

Trona stercoraria occurs in west Africa along Cape Verdes, Senegal, Guinea, Cameroon, Gabon, São Tomé Island, the Congo and Angola.

Habitat

These cowries usually live in shallow waters under large rocks.

Subspecies

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References

  1. 1 2 Trona stercoraria (Linnaeus, 1758) . Retrieved through: World Register of Marine Species  on 6 January 2019.
  2. "Trona stercoraria stercoraria". Gastropods.com. Retrieved 23 October 2010.
  3. "Trona stercoraria minima". Gastropods.com. Retrieved 23 October 2010.
  4. "Trona stercoraria rattus". Gastropods.com. Retrieved 23 October 2010.
A shell of Trona stercoraria a from Senegal, dorsal view, anterior end towards the right Cypraeidae - Trona stercoraria - Senegal-1.JPG
A shell of Trona stercoraria a from Senegal, dorsal view, anterior end towards the right
A shell of Trona stercoraria a from Senegal, lateral view, anterior end towards the right Cypraeidae - Trona stercoraria - Senegal-2.JPG
A shell of Trona stercoraria a from Senegal, lateral view, anterior end towards the right
A shell of Trona stercoraria a from Senegal, apertural view, anterior end towards the left Cypraeidae - Trona stercoraria - Senegal-3.JPG
A shell of Trona stercoraria a from Senegal, apertural view, anterior end towards the left