Species Account

Abra tenuis (Montagu, 1803)

Tellinoidea : Semelidae

Tebble name: Abra tenuis (Montagu)
Smith & Heppell name: Abra tenuis (Montagu, 1803)

To size: To 13mm. Shell Structure: Thin, brittle. Equivalve: Equivalve. Equilateral: Equilateral. Tumidity: Not tumid. Outline: Trigonal, posterior and anterior dorsal margins roughly same length and slope at the same angle to a broadly rounded ventral margin.

Sculpture: Fine concentric lines. Growth stages clear in some specimens. Margin: Smooth. Ligament: External tiny brown band, internal ligament in a small elongated, spoon-shaped chondrophore. Hinge: LV one small cardinal and single weak laterals; RV two cardinals and single laterals. Pallial Musculature: Deep pallial sinus, confluent with pallial line for much of its length. Periostracum: Pale brown, very thin. Colour: White.

Distribution & Ecology

Inhabits reduced salinity environments in estuaries and lagoons, intertidal in mud. Recorded from both east and west coasts of Britain and Ireland but not extending into Scotland

Depth Range

Additional Information & Related Species


Listed are literature citing Abra tenuis (Montagu, 1803). Reference containing the species Type Description is highlighted.

Allen J A & Sanders H L 1966. Adaptations to abyssal life as shown by the bivalve Abra profundorum (Smith). Deep Sea Research and Oceanographic Abstracts. 13: 1175-1178.
Montagu G 1803. Testacea Britannica, or natural history of British shells, marine, land and the fresh-water, including the most minute: systematically arranged and embellished with figures Romsey, London. 606pp, 16pls.


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Record last modified: 17/05/2016