Species Account

Corbula gibba (Olivi, 1792)

Myoidea : Corbulidae

Tebble name: Corbula gibba (Olivi)
Smith & Heppell name: Corbula gibba (Olivi, 1792)

To size: To 15mm. Shell Structure: Solid. Equivalve: Inequivalve, RV much larger and more convex than LV, LV sits inside RV. Equilateral: Subequilateral in adults, young shells with beaks distinctly in front of midline. Tumidity: Inflated. Outline: Adult outline roundly subtrigonal, anterior broadly rounded, posterior narrowed, subtruncate. Young shells broadly subovate. Contour: Posterior angle rounded, posterior area small, rather flat.

Sculpture: RV sculpture of evenly spaced rounded co-marginal ridges interrupted by growth stops; LV similar but finer and with a few radiating raised lines primarily periostracal. Juvenile shells with a few spines on the posterior dorsal margin. Margin: Inner margin smooth. Ligament: Internal set on a projecting chondrophore in the LV and a corresponding depression in the RV. Hinge: LV with a deep pit in front of the chondrophore corresponding with a large knob like cardinal in RV; RV with faint anterior and posterior laterals. Pallial Musculature: Pallial line entire but truncate posteriorly. Periostracum: Persistent on LV, of brown lamellar sheets and raised radial lines. Colour: Shell dirty white to cream.

Distribution & Ecology

A shallow burrower on muddy mixed sediments. Low intertidal and across the shelf. Widespread.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Juvenile Description

The juvenile shell is quite unlike the adult. The inequivalve state is poorly developed. It is broadly subovate in outline with the beaks distinctly towards the anterior; posterior broadly subtruncate, anterior narrower. Sculpture indistinct but with 3-5 spines along the posterior dorsal margin.

Related Species

Myoidea : Corbulidae


Listed are literature citing Corbula gibba (Olivi, 1792). Reference containing the species Type Description is highlighted.

Olivi G 1792. Zoologia Adriatica, ossia catalogo ragionato degli animali del golfo e della lagune di Venezia Bassano, Venecia. 334pp, 9pls.
Yonge C M 1946. On the habits and adaptations of Aloidis (Corbula) gibba. Journal of the Marine Biological Association of the United Kingdom. 26: 358-376.
Yonge C M 1946. On the habits and adaptations of Aloidis (Corbula) gibba. Journal of the Marine Biological Association of the United Kingdom. 26: 358-376.


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Record last modified: 22/03/2016