What they lack in size, they make up for in numbers. Jumping plant lice nymphs infest the new growth on a gum tree, leaving behind masses of honeydew. Kyogle, NSW.
Recently hatched plant lice nymphs feed on the underside of a gum leaf. This variety of psyllid doesn't produce lerp covers presumably because they hatch in enormous numbers. Kyogle, NSW.
Psyllid nymphs create a shell shaped lerp on this gum leaf. Wilston, Qld.