Oak pincer buck

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Oak pincer buck
Oak Pincer Buck (Rhagium sycophanta)

Oak Pincer Buck ( Rhagium sycophanta )

Systematics
Order : Beetle (Coleoptera)
Subordination : Polyphaga
Family : Longhorn beetle (Cerambycidae)
Subfamily : Narrowbuckles (Lepturinae)
Genre : Rhagium
Type : Oak pincer buck
Scientific name
Rhagium sycophanta
( Closet , 1781)

The Rhagium Sycophanta ( Rhagium sycophanta ) is a beetle from the family of longhorn beetles (Cerambycidae). It is also known as the Large Hardwood Pincer Buck or Large Pincer Buck .

features

The beetle is 17 to 30 millimeters long, making it the largest of the 4 Central European rhagium species. They get their name from their strong mandibles . The antennae are relatively short for longhorn beetles, and in males they only protrude slightly above the base of the elytra. The upper wings have clearly recognizable longitudinal ribs. The color impression is created by the interaction of the dense, patchy hair and the color of the elytra, which is only partially visible underneath. The color of the hairs is yellow-brown, the elytronics underneath are of an almost black brown, but yellow-brown to copper-colored in two parallel bands that run diagonally towards the back of the wing-cover seam , but this is only noticeable on closer inspection due to the approximately same-colored hair. There is a pointed thorn on each side of the pronotum. There is a noticeable bump between the shoulder and the pronotum. Also noticeable is the large section between the rear edge of the eyes and the constriction of the neck, the temples, which are widened like cheekbones in the females. A similar species is the black-spotted pincer buck , which differs from the oak pincer buck by a black bald spot behind the first transverse band and the formation of the rear edge of the pronotum.

Occurrence

Larva in oak bark

The beetle can be found in deciduous and mixed forests with oaks from May to July , mostly on their breeding trees, mainly oaks, but also on umbelliferae and flowering shrubs, especially hawthorns , in the vicinity of the breeding trees. The species shows a Palearctic distribution in Central and Southern Europe, Asia Minor, Caucasus and Siberia. In very rare cases it also occurs as far as southern Sweden. In Central Europe it appears on the plains and in low mountain ranges. The animal that used to be reported as frequently is now rather rare.

Way of life

Female on tree stump

The larvae eat wide, shallow passages under the bark of oak stumps, felled trunks or damaged oaks. Before pupation, it forms a pupa cradle from a coarse nail. These can still be seen years later.

nutrition

The beetles feed on flowers, the larvae on oak.

literature

  • Jiři Zahradnik, Irmgard Jung, Dieter Jung, Jarmila Hoberlandtova, Ivan Zpevak: Beetles of Central and Northwestern Europe . Parey, Berlin 1985, ISBN 3-490-27118-1 .
  • Adolf Horion : Faunistics of the Central European beetles . Volume 12: Cerambycidae - Longhorn beetles . Self-published, Überlingen-Bodensee 1974.
  • Heinz Joy, Karl Wilhelm Harde, Gustav Adolf Lohse : The beetles of Central Europe . Volume 9: Cerambycidae - Chrysomelidae . Goecke u. Evers, Krefeld 1966.

Web links

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