
Dotted Eucalyptus Leaf Beetle
The Dotted Eucalyptus Leaf Beetle is a new pest to Southern California that was first discovered in the Los Angeles area in Summer 2022 on a Lemon scented gum tree (Corymbia citriodra). Prior to this report, they have most widely been found in Australia. The Dotted Eucalyptus Leaf Beetles have yellowish bodies with black heads and terminal segments. Their host range varies among at least 20 Eucalyptus and Corymbia species.

Many of their hosts are common California landscape trees. These invasive pests feed on foliage often leaving bare twigs and consuming entire leaves. This damage may lead to significant defoliation and eventual death in young or stressed trees.
The beetles lay eggs in clusters on young stems or leaves ranging from 20-100 eggs per leaf. After hatching, they consume their eggshells. These pests will then switch to foliage feeding causing severe and rapid defoliation.
Despite their small size they can cause significant damage to the leaves of a host tree. Once mature enough larvae will drop to the ground for pupation and can have 2 generations per year. They are commonly identified by the several conspicuous blackish spots on their bodies.

Dotted eucalyptus leaf beetles can be found on different parts of the tree. During heavy infestations various larval stages and adults can be seen on the ground surrounding the infected tree and even nearby non-host plants.
Have you spotted a dotted eucalyptus leaf beetle in your landscape? Contact our team of experts to set up a consultation or for more information on proper care.
