Large fruit tree splint beetle
| Large fruit tree splint beetle | ||||||||||||
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Large fruit tree beetle ( Scolytus mali ), female |
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| Scolytus mali | ||||||||||||
| ( Bechstein , 1805) |
The large fruit tree sapwood beetle ( Scolytus mali ) 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 four 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. The forehead is flat and hairy in the male beetle, the forehead is arched and bald in the female beetle. The anal sternite has a transverse impression in the male and a small longitudinal impression in the female ( sexual dimorphism ). The forehead has no longitudinal keel. The elytra have two types of rows of dots and are red-brown in color. The rows of dots are more than a dot width apart. The wing covers are dark brown in color, the seam strip is not indented. The abdomen rises obliquely from the second sternite towards the end. The rails ( tibia ) of the forelegs are smooth on the outside and have a hook-shaped curved tip. The third tarsal link is bilobed.
distribution
The species is widespread in Europe to the Caucasus and Urals , in Sweden and southwest Finland . It does not occur in Norway .
Way of life
The Great Obstbaumsplintkäfer is mainly to pears ( Pyrus ) and Prunus species, but also on haws ( Sorbus ), hawthorns ( Crataegus ), cotoneaster ( Cotoneaster ), hornbeam ( Carpinus ) and less likely to elm ( Ulmus ) and hazel ( Corylus ) -Types before. It colonizes the bark of the trees. The feeding pattern is a one-armed mother duct (longitudinal duct) from which the larval ducts branch off to the side. The species forms two generations per year, the flight time is from May to June and August to September. The beetles are monogamous .
Systematics
Synonyms
The following synonyms for the large fruit tree beetle are known from the literature :
- Bostrichus mali Bechstein, 1805
- Eccoptogaster castaneus Ratzeburg, 1837
- Eccoptogaster pruni Ratzeburg, 1837
- Eccoptogaster pyri Ratzeburg, 1837
- Scolytus sulcatus LeConte, 1868
- Scolytus nitidulus Chapuis, 1869
- Scolytus bicallosus Eggers, 1933
- Scolytus rimskii Kurentsov, 1941
swell
Individual evidence
- ^ Scolytus mali (Bechstein, 1805). Fauna Europaea, Version 1.3, April 19, 2007 , accessed October 8, 2008 .
literature
- Sabine Grüne : Handbook for the determination of the European bark beetles . M. & H. Schaper Verlag, Hannover 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
