Red gum lerp psyllid (Nymphal shield/lerp)

Exclusively found on Eucalyptus trees, particularly Red Gums (Eucalyptus camaldulensis). Often found on the undersides of leaves.

Plant sap (phloem) from Eucalyptus trees. The 'lerp' shown in the image is actually a protective shell made of crystallized honeydew (excess sugar) excreted by the nymph.

Nymphs remain sedentary under the protective 'lerp' or shield they build from their own waste. They go through five growth stages (instars) before emerging as winged adults.

They have no health risk to humans. However, large infestations can cause severe defoliation and stress to Eucalyptus trees, leading to 'dieback'. Beneficial as a food source for some birds and parasitic wasps.