Eucalyptus tortoise beetle

Natural Habitat

Found on various species of Eucalyptus trees, native to Australia but also found where Eucalyptus are cultivated (e.g., California, South Africa).

Diet & Feeding

Both adults and larvae feed exclusively on the leaves of eucalyptus trees.

Behavior Patterns

Adults and larvae consume eucalyptus leaves. Females lay eggs on young leaves or shoots. Larvae are typically gregarious in early instars and become more solitary as they mature. They can undergo several generations per year, depending on environmental conditions. The image shows two beetles, likely mating or in close proximity on a tree trunk.

Risks & Benefits

Considered a significant pest in Eucalyptus plantations and forestry, as heavy feeding by both larvae and adults can cause defoliation, leading to reduced growth or even death of trees. They have no known risks to humans beyond their impact on eucalyptus-related industries.

Identified on: 10/7/2025