Eucalyptus Long-Horned Borer (Phoracantha semipunctata)
John Kabashima and Linda Farrar
Eucalyptus long-horned borer (ELB) was first reported in 1984. This beetle is a devastating pest of Eucalyptus plants. ELB is a native of Australia. In Australia, the beetle appears to be controlled by a complex of natural enemies that attack all life stages.
Systemic insecticides are not effective and contact insecticides are not practical because of the size of the trees. Therefore, cultural controls, such as, proper irrigation and pruning practices and the planting of resistant species are the recommended control strategies (Table 1).
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