Mysia undata
| Mysia undata | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Mysia undata | ||||||||||||
| ( Pennant , 1777) |
Mysia undata is a mussel from the family of clams (Veneridae) in the order of Venerida .
features
The same-folding, non-inflated housing is roughly round in outline and measures up to 38 millimeters in diameter. It is also almost equilateral, the vertebrae are only a little in front of the center line in relation to the length of the case. The lunula is only indistinctly limited. One area is missing. The maroon ligament lies on the inside, but is also visible from the outside. : Inset, but highly visible, It extends from the vertebra to the end of the dorsal margin. The lock has two strip-shaped cardinal teeth in the right flap, of which the rear tooth is split and has two points. There are three cardinal teeth in the left valve; here the middle cardinal tooth is split and two-pointed. There are two sphincter muscles of approximately the same size. The surface line is indented very deeply, the bay points in the direction of the space between the vertebrae and the anterior sphincter muscle.
The shell is thin and fragile. The ornamentation consists of concentric longitudinal pits and growth strips. The inside edge of the housing is smooth. The thin periostracum has a silky sheen. The color ranges from white to pale yellow.
Geographical distribution and habitat
The distribution area of Mysia undata extends along the coasts of the Eastern Atlantic from Norway to Morocco. It is also found in the North Sea and the Mediterranean. It is also proven in the waters around the Canary Islands .
Mysia undata lives buried in silty sand and silty gravel from just below the tide line to about 70 meters water depth.
Taxonomy
The species was established by Thomas Pennant in 1777 under the original binomial Venus undata . It is now generally accepted as belonging to the genus Mysia Lamarck, 1818.
supporting documents
literature
- Fritz Gosselck, Alexander Darr, Jürgen HJ Jungbluth, Michael Zettler: common names for mollusks of the sea and brackish water in Germany. Mollusca, 27 (1): 3-32, 2009 PDF
- Fritz Nordsieck: The European sea shells (Bivalvia). From the Arctic Ocean to Cape Verde, the Mediterranean Sea and the Black Sea. 256 pages, Gustav Fischer Verlag, Stuttgart 1969
- Guido Poppe. Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 p., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 126/7)
- Rainer Willmann: Mussels of the North and Baltic Seas. 310 p., Neumann-Neudamm, Melsungen 1989 ISBN 3-7888-0555-2 (p. 146/7)
On-line
Individual evidence
- ^ Thomas Pennant: British Zoology. Vol. IV. Crustacea. Mollusca. Testacea. P. III-VIII, 1-154, Plates I-XCII (= 1-93), London, White, 1777 Online at www.biodiversitylibrary.org (P. 95)
- ↑ MolluscaBase: Mysia undata (Pennant, 1777)
