 Loch Fyne M010013 |
 Loch Fyne M010015 |
 Loch Fyne M010016 |
 Loch Fyne M010017 |
 Loch Fyne M010018 |
 Loch Fyne M010019 |
 M012647 |
 M012648 |
 M012649 |
 M012650 |
''
NMW Image No.
Musculus discors (Linnaeus, 1767)
Mytiloidea : Mytilidae| Tebble name: | Musculus discors (Linnaeus) |
| Smith & Heppell name: | Musculus discors (L., 1767) |
To size: To 12mm. Shell Structure: Thin but not fragile. Equivalve: Equivalve. Equilateral: Strongly inequilateral beaks close to the anterior margin. Tumidity: Not inflated, umbos low. Outline: Modioliform; ligament margin long, not sloping steeply, angled to posterior dorsal margin; posterior rounded; ventral margin long, more or less straight but often depressed adjacent to non ribbed area; anterior narrow, rounded.
Sculpture: Radially ribbed except for smooth median area; 30-40 flat posterior ribs often faint, interspaces narrow; 9-12 prominent anterior ribs; Overall with comarginal lines and growth stops. Margin: Crenulate where radial ribs meet margin. Ligament: Deeply inset extending for most of the posterior dorsal margin. Hinge: Hinge plate narrow, few large dysodont teeth posterior of ligament distinct from marginal crenulations, otherwise smooth. Pallial Musculature: Mostly obscure. Periostracum: Green to greenish brown, thin, persistent. Colour: Grayish white, internally lustrous.
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Distribution & Ecology
Lower intertidal and shallow sublittoral attached to rocks and algae, occasionally forming dense rafts on stable gravel bottoms.
Depth Range
Intertidal
Continental Shelf (to 200m)
Juveniles & Similar Species
Juvenile Description
Key Features & Similar Species
Additional Comments
References
Listed are literature citing Musculus discors (Linnaeus, 1767). Reference containing the species Type Description is highlighted.
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Linnaeus C 1767. Systema Naturae. Editio duodecima. 1. Regnum Animale. 1&2 Homliae, Laurentii Salvii. 1-532: 533-1327. |
Resources
Downloads
Weblinks
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs - CLEMAM
Check List of European Marine Mollusca - MarLIN
The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment. - NBN Gateway
National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers. - BivAToL
- MarBEF
- Malacological Society
- Unitas Malacologica
- Census of Marine Life
- MarBEF
MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.