See also a photo showing several forms of the adult.
Classification
from Australian Faunal Directory
Order Hemiptera - bugs, hoppers and scale insects
Suborder Auchenorrhyncha - Cicadas, Hoppers, and Spittlebugs
Family Cicadellidae - Leafhoppers and Gumtree hoppers, 784 named species in Australia
Subfamily Eurymelinae - Gumtree and other hoppers with gregarious nymphs and associated with ants, 202 species in Australia
Genus Eurymeloides
Species Eurymeloides bicincta