Tritia varicosa

Tritia varicosa
Shell of Tritia varicosa
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Nassariidae
Genus: Tritia
Species:
T. varicosa
Binomial name
Tritia varicosa
(W. Turton, 1825)
Synonyms[1]
  • Buccinum tritonium Blainvill, 1826
  • Hinia (Tritonella) varicosa (Turton, 1825)
  • Hinia (Tritonella) varicosa paucicostata Nordsieck, 1974
  • Hinia pygmaea (Lamarck, 1822)
  • Hinia varicosa (W. Turton, 1825)
  • Hinia varicosa paucicostata F. Nordsieck, 1973 ·
  • Nassa (Tritonella) pygmaea (Lamarck, 1822)
  • Nassa (Tritonella) pygmaea var. elongata Bucquoy, Dautzenberg & Dollfus, 1882
  • Nassa (Tritonella) pygmaea var. evaricosa Bucquoy, Dautzenberg & Dollfus, 1882
  • Nassa elongatula Locard, 1886
  • Nassa eutacta Locard, 1887
  • Nassa pygmaea (Lamarck, 1822)
  • Nassa pygmaea var. elongata Bucquoy, Dautzenberg & Dollfus, 1882 ·
  • Nassa pygmaea var. evaricosa Bucquoy, Dautzenberg & Dollfus, 1882
  • Nassarius (Hinia) pygmaea (Lamarck, 1822)
  • Nassarius (Hinia) varicosa
  • Nassarius pygmaeus (Lamarck, 1822)
  • Nassarius varicosus (Turton, 1822)
  • Ranella pygmaea Lamarck, 1822
  • Tritia pygmaea (Lamarck, 1822) ·
  • Tritonia varicosa Turton, 1825

Tritia varicosa, common name the small dog whelk, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the nassa mud snails or dog whelks. [1]

Distribution

This species occurs in European waters, the Mediterranean Sea, the Northeast Atlantic Ocean.

Description

The length of the shell varies between 5 mm and 8 mm.

(Original description) The shell is conic and whitish, marked with rufous and featuring two or three white varices. The seven whorls are flattish and decussate. The aperture is purple, toothed on each side, and the columella is white externally. [2]

(Described as Ranella pygmaea) The shell is small, ovate-acute, ventricose, decussate, and appears reddish-ashy (cinereous-rufescent). It is adorned with tiny, numerous longitudinal costellae (fine ribs). The tail is short, and the outer lip is denticulate. [3]

References

  1. ^ a b Tritia varicosa (W. Turton, 1825). 12 June 2025. Retrieved through: World Register of Marine Species.
  2. ^ Turton, W. (1825). "Description of some new British shells". Zoological Journal. 2: 365. Retrieved 12 June 2025. This article incorporates text from this source, which is in the public domain.
  3. ^ Lamarck, (J.-B. M.) de. (1822). Histoire naturelle des animaux sans vertèbres. Tome septième. Paris: published by the Author, 711 pp. This article incorporates text from this source, which is in the public domain.
  • Nordsieck, F. (1973). Marine shells from the Mediterranean coast of Israel. Argamon. 4 (2-4): 57-63
  • Cernohorsky W. O. (1984). Systematics of the family Nassariidae (Mollusca: Gastropoda). Bulletin of the Auckland Institute and Museum 14: 1–356.
  • Backeljau, T. (1986). Lijst van de recente mariene mollusken van België [List of the recent marine molluscs of Belgium]. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
  • Hayward, P.J.; Ryland, J.S. (Ed.) (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. Clarendon Press: Oxford, UK. ISBN 0-19-857356-1. 627 pp.
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
  • Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp.
  • Stein G. (2019). Die Gattung Tritia Risso, 1826 (Neogastropoda: Nassariidae) im Miozän des Nordseebeckens. Palaeontos. 32: 3-85
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