Xylota blessings
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Common long-bellied hover fly, female |
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| ( Linnaeus , 1758) |
Xylota segnis (German name common long-bellied hover fly ) is a species of fly from the family of hover flies (Syrphidae). It is the most common species in the genus Xylota .
Origin of name
The scientific name is made up of the Latinized form of the rare Byzantine-Greek ξυλωτή [xsylōtē] / k͜sulɔːtɛː̌ / "wooden, wooden" and the Latin segnis "sluggish, lazy". Both adjectives must be supplemented with the Latin musca “fly”, so that the translation of the taxon “sluggish wooden fly” results. The part of the generic name derived from ξύλον [xylon] / k͜sǔlon / "wood", according to the designation by Johann Wilhelm Meigen in 1822, stands for the habitat of the larvae.
features
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Elongated species with a body length of 10–13 mm. Apex bluish-black glossy and hairy yellow. The light hairy at the eye rims forehead ( frons ) and the face is dusted bright. The antennae, including Arista, are dark. The mesonotum and the label are shiny metallic. The pleurs are brightly pollinated. The abdomen is black, the second and third segments are reddish with a black center line. The legs have a yellow-black markings and a comb-like row of thorns on the thickened hind legs. The wings are slightly brownish with a brown wing mark ( pterostigma ), the swinging bulbs ( holders ) are light yellow.
The white-yellow larvae are 8–12 mm in length. They are elongated, rice-grain-shaped and short-tailed. On the anal segment there is a short, wide breathing tube and 6 skin flaps arranged in pairs.
confusion
The common long-bellied hover fly can be confused with the black-footed long-bellied hover fly ( Brachypalpoides lentus ), which, however, has dark, unmarked legs and no thorns.
Occurrence
The species is distributed in Europe with the exception of the Far North, in North Africa, Siberia to the Pacific coast, Japan and North America. In Central Europe it is not uncommon in the mountains. It prefers forest and can be found on the edge of the forest and in clearings, but also occurs as a cultural follower in gardens and parks. The animals fly in Central Europe from May to September with a peak in June.
Way of life
In contrast to the females, who move away from the hatchery in search of suitable egg-laying sites ( dismigration ), the males show a strong territorial behavior . You can often see the species running around quickly and restlessly on sunny leaves or tree stumps to collect pollen from the surface. Pollen grains from the feces of other syrphids are also accepted as food. They are fast fliers and, albeit rarely, flower visitors to hazelnut , raspberry , hawthorn and cypress wolf milk . The species is polyvoltin with up to three generations per year.
The saprophage larvae can be found under the bark of rotten tree trunks, in places where tree sap has run out, on rotting sawdust and on decomposing vegetables. They overwinter and pupate in spring. The larvae are of parasitic wasps of the species Rhembobius perscrutator parasitized.
swell
Individual evidence
- ↑ See the Lexicon on Byzantine Graciousness, especially the 9th-12th centuries . Century, 5th fascicle, Vienna 2005, page 1100, sv ξυλωτός. It is only documented in a Scholion to Xenophon's Anabasis 1,10,12 and the letter 123,23 by Johannes Tzetzes .
- ^ Johann Wilhelm Meigen, Systematic Description of the Known European Two-Winged Insects, Third Part, Aachen 1822, page 211f., Available online .
literature
- Olaf Bastian: Hoverflies . Die Neue Brehm-Bücherei Vol. 576 Westarp Sciences, Magdeburg 1994, ISBN 3-89432-469-4
- Kurt Kormann: Hover flies and bubble-head flies of Central Europe . Fauna Naturführer Volume 1, Fauna-Verlag, Nottuln 2002, ISBN 3-935980-29-9
- Speight, MCD, Castella, E., Sarthou, J.-P. & Monteil, C. (eds.): Syrph the Net on CD, Issue 7. The database of European Syrphidae. ISSN 1393-4546 . Syrph the Net Publications, Dublin.
- van Veen, MP Hoverflies of Northwest Europe KNNV Publishing 2004, ISBN 978-90-5011-199-7 .
- Reemer, M., Willem Renema, Wouter van Steenis, Theo Zeegers, Aat Barendregt, John T. Smit, Mark P. van Veen, Jeroen van Steenis en Laurens JJM van der Leij: De Nederlandse zweefviegen . Nederlandse Fauna 8, ISBN 9789050112901 , EIS Nederland & Naturalis, 2009, 450 p
- Lundbeck, William: Diptera danica, genera and species of flies hitherto found in Denmark . Copenhagen: GEC Gad, 1907-27.
- Zoological State Collection Munich: SPIXIANA Zeitschrift für Zoologie Supplement 15, Munich, 1990 ISSN 0177-7424
- Graham Rotheray: Color Guide to Hoverfly Larvae (Diptera, Syrphidae) , 1993, Dipterists Digest, No. 9, 156 pages, ISSN 0953-7260 . Published by Derek Whiteley, Sheffield, England assisted by the Royal Museum of Scotland.
