Wentletrap

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Wentletrap
Two shells of Epitonium humphreysii, Humphrey's wentletrap
Two shells of Epitonium humphreysii, Humphrey's wentletrap
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Prosobranchia
Order: Heterogastropoda
Superfamily: Architectonicacea
Family: Epitoniidae
Berry, 1910
Genera

See text.

Wentletraps are small, often white, very high-spired, predatory sea snails, marine gastropod mollusks, in the family Epitoniidae.

The word wentletrap originated in German-Dutch, and it means spiral staircase. These snails are sometimes also called "staircase shells", and "ladder shells".

The Epitoniidae family belongs to the Superfamily Architectonicacea, which also includes the Architectonicidae (the perspective snails or sundial snails), and Janthinidae (the pelagic purple snails), along with several other families which consist of small sea snails.

Contents

[edit] Distribution

Wentletraps inhabit all seas and oceans worldwide, from the tropical zones to the arctic and antarctic zones.

[edit] Habitat

Wentletraps are found in habitats which also contain sea anemones or corals, which serve as a food source for the wentletrap.

[edit] Shell description

Wentletraps are notable for their intricately geometric shell architecture. The turret-shaped shell consists of tightly-wound whorls which create a high, conical spiral. The shells have a round aperture and a round operculum which fits the aperture tightly.

Within the genus Epitonium the shell has high, sharply ribbed sculpture, known as "costae".

Most species of wentletrap are white, and have a porcelain-like appearance, measuring no more than two inches in length, and the animal can exude a pink or purplish dye.

[edit] Life habits

Many wentletraps reveal a hint of purple body color, suggestive of carnivorous feeding (Keen, 1958). Keen also cited direct observation of a wentletrap feeding by insertion of its proboscis into a sea anemone.

[edit] Genera within the family Epitoniidae

[edit] References

[edit] Books

A. Weil, L. Brown and B. Neville, 1999, The Wentletrap Book: A Guide to the Recent Epitoniidae of the World, Mal de Mer Enterprises

[edit] External links

Languages