Eucalyptus gall wasp

Eucalyptus gall wasp causes small raised corky lumps on the older foliage and may result in excessive leaf fall. This minute insect was first detected in Britain in 2005 and it has spread across southern England.

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Eucalyptus gall wasp (Ophelimus maskelli) on Eucalyptus (Eucalyptus sp.). Credit: RHS/Entomology.

Quick facts

Common name Eucalyptus gall wasp
Scientific name Ophelimus maskelli
Plants affected Eucalyptus
Main symptoms Small, slightly raised swellings appear on the leaves in spring
Most active March-June

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