Marpissa radiata
| Marpissa radiata | ||||||||||||
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Marpissa radiata (female) |
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| Scientific name | ||||||||||||
| Marpissa radiata | ||||||||||||
| ( Pit , 1859) |
Marpissa radiata is a spider from the family of jumping spiders . The species is sparsely distributed in Central Europe and not frequent.
description
Males reach a body length of 6 to 7 mm, females are 8-10 mm long. Marpissa radiata is one of the large native jumping spiders. Like many jumping spiders, the species shows a clear sexual dimorphism in terms of color and drawing. In the female, the front body ( prosoma ) is dark brown and whitish hairy. The face shows a broad, light orange horizontal stripe under the main eyes, the pedipalps are hairy in a single color. The elongated rear body ( opisthosoma ) is also hairy whitish and bears a striking pattern. This consists of a yellowish central stripe and two parallel, blackish stripes, the latter mostly having a rust-red border. The three rear pairs of legs are light beige and show dark, narrow longitudinal stripes. The front, much stronger pair of legs is darker brown.
Overall, males are significantly darker. The prosoma has sparsely hairy white hair on a black background. The opisthosoma, which is also blackish and hairy white, also shows three longitudinal stripes, but these are almost monochrome and dark. The greatly enlarged pedipalps are thickly haired in gold. The legs are uniformly black-brown with gold-colored tarsi. The front, much stronger pair of legs is a single color, darker brown.
distribution and habitat
Marpissa radiata inhabits large parts of the Palearctic from Great Britain and Central France to Kamchatka . In a north-south direction, the distribution extends from Scandinavia to central Italy and in the east to south to northern Afghanistan . The distribution area includes the temperate , subcontinental to continental zone. The species is absent in Europe in the west in Ireland and on the Iberian Peninsula , in the north in Norway and in the south in Greece . In Germany, the species is apparently only very sparsely distributed and has so far been detected almost exclusively in the west and northeast.
The species shows a close connection to eutrophic silted vegetation in moors , small bodies of water and on wet meadows.
Way of life
In summer, Marpissa radiata creates webs in previous year's reed frisps , in which the egg cocoons are also created. It overwinters as an adult spider close to the ground, especially in the leaf sheaths of bulrushes .
Danger
The species is nowhere common in Germany. In Germany it is classified as "endangered" (category 3) in the Red List because of its rarity and its close connection to moist habitats .
literature
- Heiko Bellmann : Cosmos Atlas Arachnids of Europe. 3. Edition. Kosmos, Stuttgart 2006, ISBN 3-440-10746-9 .
- Ralph Platen, Bodo von Broen, Andreas Herrmann, Ulrich M. Ratschker, Peter Sacher: Total species list and red list of the spiders, harvestmen and pseudoscorpions of the state of Brandenburg (Arachnida. Araneae, Opiliones, Pseudoscorpiones) with information on frequency and ecology. In: Nature conservation and landscape maintenance in Brandenburg. N and L. Vol. 8, Issue 2 (supplement), 1999, ISSN 0942-9328 , pp. 1-79.
Web links
Marpissa radiata in the World Spider Catalog
- Wolfgang Nentwig , Theo Blick, Daniel Gloor, Ambros Hänggi, Christian Kropf (Eds.): Spinnen Mitteleuropas - Identification key, genus Marpissa. on-line