Single-colored longhorn buck
| Single-colored longhorn buck | ||||||||||||
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Single-colored longhorn buck ( Monochamus sutor ), ♂ |
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| Monochamus sutor | ||||||||||||
| ( Linnaeus , 1758) |
The Monochrome Long-horn buck , Schuster Bock or Monochrome spruce Bock ( Monochamus sutor ) is a beetle from the family of longhorn beetles (Cerambycidae).
features
The beetles reach a length of 15 to 24 millimeters, their long and strong legs make them good climbers. Their body color is dark to black, parts of the pronotum and the antennae can be slightly reddish in color. On each of the wings there are three areas on which several light, fine spots can be seen, which are caused by the hairiness. However, the drawing is so variable that it no reliable differentiation from baker Bock ( Monochamus galloprovincialis ) and cutter block ( Monochamus sartor permitting). A reliable distinction only has the hair of scutellum (scutellum) situated between the base of the wing covers. In the shoemaker's goat, it is densely light-haired except for a bald central line. This can be clearly seen when the image on the right is enlarged.
Like all species of the subfamily Lamiinae, the shoemaker's buck has a furrow on the inside of the front rail , the end link of the jaw button is pointed and the head drops vertically at the front so that the mouthparts point downwards. The pronotum has a distinct pointed hump on each side, which in Monochamus lies in front of the middle of the pronotum. The strong first antenna element is truncated at the end. It is significantly shorter than the third one. As with all monochamus species, only the antennae of the females appear curled by a light hair on the base of the antennae segments. They are a little more than body length, in the male about twice as long.
Occurrence
The shoemaker's goat occurs in Central Europe (southern area of distribution) mainly in the mountains, further in Scandinavia (northern area of European occurrences), Siberia, Mongolia, Manchuria, Korea and Japan. Finds from the plain were probably brought in by transporting wood. You can find the beetle from July to September on freshly felled trunks and thick branches of coniferous wood , preferably spruce and fir .
Way of life and development
The beetles gnaw the bark of young branches. The females lay their eggs. To do this, they gnaw a funnel into the bark. The trees must not be barked, as the larvae initially depend on the nutrient-rich cambium of the bast layer . At first they only eat just below the bark, but with increasing age they penetrate deeper into the wood and can become harmful. The development usually takes three years. According to Horion, the species is a feared pest on spruce timber.
literature
- Harde, Severa: Der Kosmos Käferführer, The Central European Beetles , Franckh-Kosmos Verlags-GmbH & Co, Stuttgart 2000, ISBN 3-440-06959-1
- H. Joy, KW Harde, GA Lohse: Die Käfer Mitteleuropas, Vol. 9 . Spectrum Academic Publishing House in Elsevier 1966, ISBN 3-827-40683-8
- Adolf Horion : Faunistics of the Central European Beetles, Bd. XII . Überlingen-Bodensee 1974
