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Diagram showing the life cycle of the fungus Ceratocystis ulmi, the cause of Dutch elm disease, and its connection with the elm bark beetles, Scolytus scolytus.
Figure 5 Diagram showing the life cycle of the fungus Ceratocystis ulmi, the cause of Dutch elm disease, and its connection with the elm bark beetles, Scolytus scolytus.

 4.3 Dutch elm disease