Species Account

Macoma moesta (Deshayes, 1854)

Tellinoidea : Tellinidae

Tebble name: n/a
Smith & Heppell name: Macoma moesta Deshayes, 1854

Notes on Nomenclature

Not included in CLEMAM – arctic species.

To size: To 30mm. Shell Structure: Thin, fragile. Equivalve: Equivalve. Equilateral: Inequilateral, beaks to posterior. Tumidity: Flattened. Outline: Subovate, Anterior dorsal margin long, gently sloping, anterior broadly rounded. Posterior dorsal margin steeply sloping. Contour: Gapes slightly to posterior.

Sculpture: Unevenly spaced concentric lines and growth lines. Margin: Smooth. Ligament: Dark brown, attached to a deep escutcheon, half the length of the posterior margin. Hinge: Two cardinals in each valve, in RV posterior bifid, in LV anterior bifid. No laterals. Pallial Musculature: Deep pallial sinus in LV, shallower in RV. Cruciform muscles visible. Periostracum: Brown, flaky. Colour: Dirty white.

Distribution & Ecology

A burrower in muddy sands, offshore. Not in the British fauna. Circum-Arctic Greenland and Svalbard.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Key Features & Similar Species

Separation of sub-arctic and arctic Macoma is problematic but none have been found living in British waters.
M. calcarea, subovate, posterior subacute
M. torelli, trigonal
M. moesta, subovate, posterior subtruncate, compressed
M. loveni, subovate, posterior subtruncate, inflated

Related Species


Listed are literature citing Macoma moesta (Deshayes, 1854). Reference containing the species Type Description is highlighted.

Deshayes G P 1854. Descriptions of New Shells from the Collection of Hugh Cuming, Esq 22. Proceedings of the Zoological Society of London. 317-371.


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Record last modified: 22/03/2016