Dutch elm disease
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Dutch elm disease is caused by an Ascomycete fungus that kills elm trees, and is spread by elm bark beetles. Believed to be originally native to Asia, the disease was accidentally introduced into Amer
On a golden elm with characteristic leaf shedding
Asexual synnema of the pathogenic fungus Ophiostoma ulmi can overwinter in bark and wood, and can be spread by beetle vectors.
Beetle feeding galleries on wych elm trunk
Branch death, or flagging, at multiple sites in the crown of a diseased elm
Bark beetle
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A bark beetle is the common name for the subfamily of beetles Scolytinae. Previously, this was considered a distinct family, but is now understood to be a specialized clade of the "true weevil" family
Dutch elm disease
…Dutch elm disease is caused by an Ascomycete fungus that kills elm trees, and is spread by elm bark beetles. Believed to be originally native to Asia, the disease was accidentally introduced into America, Europe, and New Zealand. In these regions it has…
Dendroctonus ponderosae
Mountain pine beetles killed these lodgepole pine trees in Prince George, British Columbia.
Effects of bark beetle in the Bavarian Forest
Bark beetle gallery engraving the sapwood