Zonaria pyrum

Zonaria pyrum, common name the pear cowry, is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.

Pear cowry
A shell of Zonaria pyrum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Order: Littorinimorpha
Family: Cypraeidae
Genus: Zonaria
Species:
Z. pyrum
Binomial name
Zonaria pyrum
(Gmelin, 1791)
Synonyms

Description

The shells of these quite common cowries reach on average 32–38 millimetres (1.3–1.5 in) of length, with a minimum size of 17 millimetres (0.67 in) and a maximum size of 52 millimetres (2.0 in). They are very variable in pattern and colour. The surface is smooth and shiny, their basic color is usually orange-brown, with many brown spots and two or three clear trasversal bands. The base, the margins and the teeth are orange or pinkish. In the living cowries mantle and foot are quite developed, with external antennae. The mantle is orange-reddish, with yellow papillae. The lateral flaps may hide completely the shell surface and may be quickly retracted into the shell opening.

A shell of Zonaria pyrum, dorsal view, anterior end towards the right
A shell of Zonaria pyrum from Sicily, lateral view, anterior end towards the right
A shell of Zonaria pyrum from Sicily, apertural view, anterior end towards the left

Distribution

This species occurs in the Mediterranean Sea to southwest Africa, off Morocco, Tunisia, Libya, Italy, Lampedusa Island, Sicily, Malta, Greece, Turkey, Senegal, Gabon and Angola.

Habitat

These cowries live in tropical and subtropical waters usually up to 15–50 metres (49–164 ft) of depth, hidden under rocks or coral slabs and caves. They are omnivore-grazer, mainly feeding at night on sponges, algae and corals.

Subspecies
  • Zonaria pyrum angolensis Odhner, 1923
  • Zonaria pyrum pyrum Gmelin, 1791
  • Zonaria pyrum senegalensis Schilder, 1928
gollark: It is not. Again, a isn't "the first thing" but "the x^2 thing".
gollark: That is also true but not what I mean here.
gollark: This is called commutativity.
gollark: It's entirely valid to reorder things you're adding together and the answer is the same.
gollark: You are too focused on the particular pattern of what you've done in class or whatever over the actual meaning.

References
  • Repetto G., Orlando F. & Arduino G. (2005): Conchiglie del Mediterraneo, Amici del Museo "Federico Eusebio", Alba, Italy
  • Biolib
  • "Zonaria pyrum pyrum". Gastropods.com. Retrieved 16 January 2019.


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