Nordic spruce bark beetle
| Nordic spruce bark beetle | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nordic spruce bark beetle ( Ips duplicatus ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Ips duplicatus | ||||||||||||
| ( Sahlberg , 1836) |
The Nordic spruce bark beetle ( Ips duplicatus ) is a species of beetle from the subfamily of the bark beetles (Scolytinae). It is considered a major forest pest .
features
The Nordic spruce bark beetle is similar in shape to the other representatives of the genus Ips . It can only be distinguished with certainty by the following features: On the rear section of the wing coverts that slopes abruptly at an angle (called the lintel), the indented part is soapy, not glossy. On the raised edge to the side of it sit four teeth on each side, the middle two (sutural teeth) are closer to each other than to the second tooth (in the very similar book printer , with whom it often appears on spruce, their distance from one another is significantly greater).
distribution
The species is spread across the Palearctic , from Scandinavia to Northeastern Europe to North Asia. Central European certificates are available from Germany, Northern Austria, Switzerland, Slovakia, the Czech Republic and Poland. To the east, evidence is available as far as Inner Mongolia (China). The eastern populations show certain genetic differences, and their aggregation pheromones are composed somewhat differently.
history
The first description of the Nordic spruce bark beetle was written by Carl Reinhold Sahlberg in 1836. The beetle originally comes from Nordic countries. The beetle has been considered widespread in Austria since 2018. In Germany there were individual finds of the beetle in 1923 and 1950 and further distribution in 2018. In 2019 it was also detected in Switzerland.
biology
With an average of three to four millimeters, the Nordic spruce bark beetle is slightly smaller than the book printer , whose way of life is similar. The beetle occurs in community with the printer; however, it prefers to colonize “thinner” trunk areas of spruce trees . As a "Nordic species", he developed several generations at lower temperatures than the book printer.
literature
- Hannes Lemme: News from the Käferfront , Bavarian State Institute for Forests and Forestry (BFW), published 2018, ( online PDF file )
- Bernhard Perny, Hannes Krehan, Gottfried Steyrer: Bark beetle species , BFW practical information No. 17 - 2008, publisher: Bavarian State Institute for Forests and Forestry ( online PDF file )
- Gottfried Steyrer: How widespread is the Nordic spruce bark beetle (Ips duplicatus) in Austria? , published in Forstschutz Aktuell (BFW), issue 65/2018 ( online PDF file )
Web links
- Bavarian State Institute for Forest and Advanced Science: The Nordic Spruce Bark Beetle
- Determination table of genus: Ips De Geer . By Arved Lompe. last updated on June 16, 2019.
Individual evidence
- ↑ KE Schedl: Family Scolytidae. In Heinz Freude, Karl Wilhelm Harde, Gustav Adolf Lohse (editor): The beetles of Central Europe. Volume 10 Bruchidae – Curculionidae 1. Goecke & Evers Verlag, Krefeld 1981, ISBN 3-87263-029-6 . Ips duplicatus on page 90.
- ↑ a b New bark beetle species in Switzerland. In: schweizerbauer.ch . November 28, 2019, accessed November 29, 2019 .
- ↑ Ferenc Lakatos, Wojciech Grodzki, Qing-He Zhang, Christian Stauffer (2007): Genetic comparison of Ips duplicatus (Sahlberg, 1836) (Coleoptera: Curculionidae, Scolytinae) populations from Europe and Asia. Journal of Forest Research 12: 345-349. doi: 10.1007 / s10310-007-0025-9
- ↑ Ralf Petercord, Hannes Lemme: The Nordic Spruce Bark Beetle ( Memento from June 24, 2019 in the Internet Archive ), published in the “LWF-aktuell 120” issue of the Bavarian State Institute for Forestry and Forestry (accessed June 24, 2019).
- ↑ Bernhard Perny, Hannes Krehan, Gottfried Steyrer: Bark beetle species : Nordic spruce bark beetle ( memento from June 24, 2019 in the Internet Archive ), published in BFW Practical Information No. 17 - 2008, publisher: Bavarian State Institute for Forestry and Forestry (accessed on 24 June 2019 ). June 2019).