Maple sapwood beetle
| Maple sapwood beetle | ||||||||||||
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Maple sapling beetle ( Scolytus koenigi ), female, enlarged 40 times. |
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| Scientific name | ||||||||||||
| Scolytus koenigi | ||||||||||||
| Schevyrev , 1890 |
The maple sapwood beetle ( Scolytus koenigi ) is a weevil from the subfamily of the bark beetle (Scolytinae). Since it creates its breeding systems in the bark of the host trees, it is counted among the bark breeders.
features
The beetles are three to 4.5 millimeters long and have a black, cylindrical body. The pronotum is large and narrowed in front, the base and sides are edged. Seen from above, it does not cover the head. In the male beetle, the forehead is flat and densely hairy, in the female beetle, however, it is arched and hairy short ( sexual dimorphism ). The belly rises almost vertically from the second sternite . The dark brown colored elytra have uniform rows of dots with about the same size dots. The points of the pronotum are small, dense and never fused into longitudinal wrinkles. The antennae and legs are red-brown.
distribution
The species is distributed in southern and central Europe as well as in the southern European part of Russia, the Caucasus and Scandinavia.
Way of life
The maple sapwood beetle occurs mainly on maples ( Acer ). It colonizes the bark of the trees. The feeding pattern is a relatively short, 1.5 to three centimeters long, one-armed mother tunnel (longitudinal tunnel). The larval ducts branch off laterally from this. They are usually very dense and can be up to 12 centimeters long. The species does not cause economic damage.
Systematics
Synonyms
The following synonyms are known from the literature :
- Eccoptogaster siculus Eggers, 1908
- Scolytus koenigi Schevyrev, 1890
- Scolytus aceris Knotek, 1892
swell
Individual evidence
- ^ Scolytus koenigi (Schevyrev 1890). Fauna Europaea, Version 1.3, April 19, 2007 , accessed on September 18, 2008 .
literature
- Fritz Schwerdtfeger : The forest diseases. Textbook of forest pathology and forest protection . 4th, revised edition. Parey, Hamburg and Berlin 1981, ISBN 3-490-09116-7
- Sabine Green : Manual for the determination of the European bark beetle Verlag M. & H. Schaper, Hanover 1979, ISBN 3-7944-0103-4
- Edmund Reitter : Fauna Germanica - The beetles of the German Empire. Volume 5, KG Lutz, Stuttgart 1916
- Edmund Reitter: Fauna Germanica - The beetles of the German Empire. 5 volumes, Stuttgart KG Lutz 1908–1916, digital library volume 134, Directmedia Publishing GmbH, Berlin 2006, ISBN 3-89853-534-7
