Hornbeam beetle
| Hornbeam beetle | ||||||||||||
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Hornbeam beetle ( Scolytus carpini ), male, magnified 20 times. |
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| Scolytus carpini | ||||||||||||
| ( Ratzeburg , 1837) |
The hornbeam beetle ( Scolytus carpini ) 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 3 to 3.5 millimeters long and have a dark brown to black colored, 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. The forehead of the male beetle is flat and has long yellow hair. In the female beetle, the forehead is arched, short and not very hairy ( sexual dimorphism ). It has no longitudinal keel. The elytra are dark transverse and have two types of rows of dots. The abdomen rises obliquely from the second sternite towards the end. The front rails are smooth on the outside and have a hook-shaped curved tip. The third tarsal link is bilobed.
distribution
The species is widespread in Central, Southern and Southeastern Europe. It is also found in southern Sweden, the Caucasus and the Crimea .
Way of life
The hornbeam sapwood beetle occurs mainly on hornbeams ( Carpinus ) and hop beeches ( Ostra ), occasionally also N beeches ( Fagus ), oaks ( Quercus ), hazels ( Corylus ) and elms ( Ulmus ). It colonizes the bark of the trees, also in the area of the bark . The feeding pattern is a relatively short, one to three centimeter long, one-armed mother's passage (transverse passage), which deeply furrows the sapwood. The larval ducts branch off laterally upwards and downwards. They can also be clearly seen in the splint. The feeding pattern is very similar to that of the oak split beetle ( Scolytus intricatus ).
The species forms one generation per year that flies in June. The beetles are monogamous .
Systematics
Synonyms
The following synonyms are known from the literature for the hornbeam beetle :
- Eccoptogaster carpini Ratzeburg, 1837
- Eccoptogaster balcanicus Eggers, 1911
- Eccoptogaster peregrinus Eggers, 1908
swell
Individual evidence
- ^ Scolytus carpini (Ratzeburg 1837). Fauna Europaea, Version 1.3, April 19, 2007 , accessed on September 16, 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. In: Digital Library . tape 134 . Directmedia Publishing, Berlin 2006, ISBN 3-89853-534-7 .
