Lerp-forming
Guides
Glycaspis brimblecombei
Red Gum Lerp Psyllid
Glycaspis brimblecombei, the Red Gum Lerp Psyllid, is an invasive sap-sucking insect native to Australia that has become a significant pest of Eucalyptus plantations worldwide. First described by Moore in 1964, this psyllid has spread to North America, South America, Europe, Africa, and Asia, causing substantial damage to forestry productivity. Nymphs construct protective sugary coverings called lerps while feeding on leaf phloem, and their multivoltine life cycle enables rapid population growth. The species is a major target for biological control efforts using parasitoids, predators, and entomopathogenic fungi.