Young plant louse enters it's lerp - these nymphs construct housing from bodily excretions, a handy skill to have. Toowong, QLD.
A lerp-forming psyllid next to a much smaller nymph hiding inside it's protective lerp. Toowong, QLD.
Tiny plant louse nymph hides in the protective lerp it's constructed from honeydew. These lerps can attract sooty mould which can cause eucalypts to lose their leaves. Toowong, QLD.