Macoma balthica (Linnaeus, 1758)
Tellinoidea : Tellinidae
Inequilateral, beaks central.
Can be tumid.
Ovate-trigonal. anterior dorsal margin short, broadly rounded, posterior dorsal margin almost straight to wedge-shaped, almost beak-like posterior margin. Posterior slightly bending to the right.
Small posterior gape.
Sculpture: Fine concentric lines and growth lines visible. Margin: Smooth. Ligament: Dark brown band extending one third of the way to posterior margin. Hinge: Two cardinals in each valve, in RV posterior bifid, in LV anterior bifid. No laterals. Pallial Musculature: Deep pallial sinus, confluent with pallial line. Shape of sinus can vary. Cruciform scars sometimes visible. Periostracum: Thin, beige or pale grey. Colour: White, some with deep dusky pink or orange internally which is visible externally on the umbonal region.
Distribution & Ecology
Additional Information & Related Species
Key Features & Similar Species
Tellinoidea : Tellinidae
Listed are literature citing Macoma balthica (Linnaeus, 1758). Reference containing the species Type Description is highlighted.
Linnaeus C 1758. Systema Naturae. Editio decima. 1. Regnum Animale Holmiae, Laurentii Salvii. 824pp.
Väinölä R, & Varvio SL 1989. Biosystematics of Macoma balthica in northwestern Europe In: Reproduction, Genetics and Distributions of Marine Organisms. (eds Ryland JS, Tyler PA). Olsen and Olsen, Fredensborg, Denmark.. 309-316.
Väinölä, R 2003. Repeated trans-Arctic invasions in littoral bivalves: molecular zoogeography of the Macoma balthica complex. Marine Biology. 143: 935-946.
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