Transparent trunk shell

Transparent trunk shell
Transparent trunk shell ( Lepton squamosum )
Systematics
Superordinate : Imparidentia Order : Superfamily : Galeommatoidea Family : Lasaeidae Genre : Lepton Type : Transparent trunk shell
Scientific name
Lepton squamosum
Montagu , 1803

The transparent trunk clam ( Lepton squamosum ) is a type of clam from the Lasaeidae family .

features

The equally hinged and almost equilateral housing is 15 mm long. The vertebrae sit just in front of the midline. It is rhomboidal in outline and severely flattened. The dorsal and ventral margins are almost parallel. The front and rear edges are sloping. Front and rear ends are well rounded, the front end is slightly more rounded. The inner edge of the case is smooth. The lock teeth are small. The right valve shows a very small main tooth and paired front and rear posterior teeth. In the left one sit a posterior and an anterior posterior tooth and a small main tooth. The very small ligament lies internally in a narrow, triangular pit under the vertebra; the pit points slightly backwards. The surface line is not indented. The sphincters are roughly the same size.

The whitish skin is thin and fragile. The surface shows very fine growth strips and somewhat coarser lines for growth interruptions. The surface is densely dotted.

Geographical distribution, habitat and way of life

The distribution area extends from Norway to Gibraltar and the western Mediterranean . It lives there below the tide line except for the flat shelf (Fritz Nordsieck: 15 to 126 m). Lepton squamosum is a commensal attached to the ventral side of the burrowing Callianasid crabs Upogebia deltaura and Upogebia stellata .

Taxonomy

The taxon was set up in 1803 by Georg Montagu in the original combination Solen squamosum . The species is now generally assigned to the genus Lepton . MolluscaBase has two synonyms : Eupoleme cancellata Leach, 1852 and Psammobia punctura Brown, 1827.

supporting documents

literature

• Paul Chambers: Channel Island Marine Molluscs: An Illustrated Guide to the Seashells of Jersey, Guernsey, Alderney, Sark and Herm. 321 pp., Charonia Media, 2008, ISBN 978-0-9560655-0-6 , p. 230
• Fritz Nordsieck : The European sea shells (Bivalvia). From the Arctic Ocean to Cape Verde, the Mediterranean Sea and the Black Sea. 256 p., Gustav Fischer Verlag, Stuttgart 1969 (p. 89)
• Guido Poppe and Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 pp., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 87)

On-line

• Marine Bivalve Shells of the British Isles: Lepton squamosum (Montagu, 1803) (website of the National Museum Wales, Department of Natural Sciences, Cardiff)

Individual evidence

1. ↑ Fritz Gosselck, Alexander Darr, Jürgen HJ Jungbluth, Michael Zettler: Trivial names for mollusks of the sea and brackish water in Germany. Mollusca, 27 (1): 3-32, 2009 PDF
2. ↑ George Montagu: Testacea Britannica, or natural history of British shells, marine, land, and fresh-water, including the most minute: systematically arranged and embellished with figures. SI-XXXVII (= 1-37), pp. 1–606, Taf. 1–16, White, London, 1803 Online at www.biodiversitylibrary.org (p. 565)
3. ↑ MolluscaBase: Lepton squamosum (Montagu, 1803)