Paropsisterna nr. tigrina
The pronotum is fairly clean and elytra are mottled in white and dark brown to black.
The foodplant is uncertain and not assumed to be eucalyptus.
The interstitial puncturations are large and mixed with striae as to lose their linear nature. This is similar to P. m-fuscum and P. senmifumata and seems to fit into that complex. I did not go to Horn. These beetles were collected by Trevor to assist in research of this group of beetles. They are now held in the Australian Museum collection (Sydney).