Laphria ephippium
| Laphria ephippium | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Laphria ephippium , male |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Laphria ephippium | ||||||||||||
| ( Linnaeus , 1781) |
Laphria ephippium is a predator fly from the order of the two-winged fly . There are 19 species of the genus Laphria in Europe.
anatomy
The head of Laphria ephippium is, like all predatory flies, easy to move. The eyes are large and separated from each other by a clear depression. The antennae are tripartite. The last antenna element is elongated and trimmed. It has no clear, but only a microscopic bristle. The pointed trunk points diagonally downwards. It is compressed laterally rather than dorsoventrally . A facial beard protects the face from injury that the prey could cause.
The predatory flies are good fliers. The first two longitudinal veins of the wings unite in front of the edge and thereby form a closed cell (marginal cell r1).
The legs are strong, the claw joint has two lobes. The underside of the rear rail does not have a brush-like field of short hair near the turn of the tarsi . The males carry a thorn there, the rear rails of the females are long hairy. L. ephippium differs from the other Central European species of the genus Laphria in its hairiness. In L. ephippium , the abdomen is mainly hairy black on top, and there are few white hairs on the sides. Yellow hair is missing.
Way of life
Little is known about the way of life. The eggs are oval, reddish brown and have a matt sheen. The egg shell is firm and structured like a facet. The larvae develop in rotting wood ( beech , elm ) and are believed to be predatory. The adult animal is also predatory. It sits in wait for its prey. Then it flies towards the prey and grabs it in flight. It sticks its prey with its pointed trunk and sucks it out. The adults fly in Germany from mid-May to mid-August, in Denmark from the second third of May to the end of July.
Spread and endangerment
The species occurs only in parts of Europe. The distribution in the south-north direction extends from Italy to Sweden, in the west-east direction from France to central Russia. However, the species is absent in, for example, Greece, the British Isles, Norway and the Ukraine. Laphria ephippium is rarer than L. flava , the species is considered endangered in Denmark and Sweden. In Belgium it was long considered extinct. In Bavaria it is classified under "Status unknown, accept risk".
swell
- Michael Chinery: "Parey's Book of Insects". Paul Parey Publishing House, Hamburg and Berlin, ISBN 3-490-23118-X
- Larsen, MN & R. Mayer: "Species diversity, distribution, and conservation status of the Asilidae (Insecta: Diptera) in Denmark. - Steenstrupia 28 (2): 177-241. Copenhagen, Denmark, December 2004, ISSN 0375-2909
- Robert Lavigne, Steve Dennis, Jeanne A. Gowen: "Asilid Literature Update 1956-1976". SM-36 March 2000, Cooperative Extension Service UNIVERSITY OF WYOMING College of Agriculture
Web links
- Systematics and distribution: Fauna Europaea