Tropical nut borer (Hypothenemus obscurus) is an exotic plant pest not present in Australia. This insect is a serious threat to Australia’s macadamia industry.

Cryptophlebia ombrodelta, the litchi fruit moth or macadamia nut borer, is a moth of the family Tortricidae.

Phytophthora cinnamomi is a soil-borne water mould that produces an infection which causes a condition in plants called "root rot" or "dieback". The plant pathogen is one of the world's most invasive species and is present in over 70 countries around the world.