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Great spruce bark beetle - Dendroctonus micans
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Symptoms / species
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Impact / measures
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Pictures
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Occurrence map
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 | | Characteristic resin-funnel at the base of the stem (partly violet stain, mixture of bore shavings and resin – frass); needle discoloration of the whole crown; eggs are deposited at the stem base or on superficial strong roots; hibernation in every stage of development possible; roundish tunnels below the bark with dense layers of bore shavings (feces and shavings); largest bark beetle of central Europe (7-9mm in size), dark brown, without any teeth on the hind end; larva light beige to white, without legs.
| | | Affected tree species | Fir; Larch; Pine; Spruce; | | Affected parts | Stem; Root; |
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| attacks mostly trees, which had been mechanically damaged on the stem; younger trees may die, older trees may suffer severly from loss in increment and vitality; prefers spruces 20-40 years old.
Curative measures
Removal of attacked trees from the stand; watch for infested strong roots!
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| Great spruce bark beetle | | Great spruce bark beetle, larva (Foto Landesregierung Stmk., Pfister) | | Great spruce bark beetle, tunnels at the stem basis (Foto Landesregierung Stmk., Pfister) | | Great spruce bark beetle, resin flow at the stem base (Foto Landesregierung Stmk., Pfister) | | Great spruce bark beetle, shavings, on the right side (Foto Landesregierung Stmk., Pfister) |
| 2001
Nikolsdorf | 2000
Traun |
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