Species Account

Rocellaria dubia (Pennant, 1777)

Gastrochaenoidea : Gastrochaenidae

Tebble name: Gastrochaena dubia (Pennant)
Smith & Heppell name: Gastrochaena dubia (Pennant, 1777)

Notes on Nomenclature

Here previously as Gastrochaena dubia.

To size: To 25mm. Shell Structure: Thin, fragile. Equivalve: Equivalve. Equilateral: Inequilateral, beaks to the anterior. Outline: Skewed modioliform with large anterior ventral gape. Dorsal margin almost straight, posterior margin narrowly curved to a broadly curved ventral margin. Anterior ventral margin straight, leading to small curve beneath beaks. Gape runs for most of the ventral margin length to beneath the beaks.

Sculpture: Concentric ridges. Margin: Smooth. Ligament: Dark brown, external, half way to posterior margin. Hinge: No teeth present. Pallial Musculature: Very deep, almost to beneath beak. Periostracum: Light to dark brown. Colour: Greyish white.

Distribution & Ecology

A borer into soft rock, most records are from the intertidal but probably ranges into the sublittoral. A southern species ranging into the Western Approaches, Channel Is. and west of Ireland.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Related Species

Gastrochaenoidea : Gastrochaenidae


Listed are literature citing Rocellaria dubia (Pennant, 1777). Reference containing the species Type Description is highlighted.

Pennant T 1777. British Zoology vol.IV. Crustacea, Mollusca, Testacea London, B. White. 154pp, 93pls.


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Record last modified: 22/03/2016