
Paropsisterna bimaculata
This yellow beetle is one of the more commercially destructive species on Eucalyptus, particularly recently as trees are used for plantation timbers and Eucalyptus is the most commonly planted hardwood species on earth.
In winter, the pattern becomes red.

''Paropsisterna bimaculata'' is a beetle commonly called a leaf beetle in the subfamily Chrysomelinae.
This insect is common in Tasmania and can be a pest in the forestry industry.
Paropsisterna bimaculata will develop a red color just before their winter hibernation. When they emerge the red slowly disappears into a pale green colouring with faint gold tessellation. This takes about a month with the males generally slightly advanced.
Recently this beetle has been noticed in Victoria.