Sorry for the bad photo. I had a cocoon in a jar, the cocoon was green and then suddenly turned brown/black in the days leading up to it hatching. The moth is about 2cm long and is mottled brown and black with two white spots on its wings. The caterpillar was green and ate mint leaves.
A type of borer that klils the plant.
Decently large caterpillars(?) in a group on a eucalyptus branch.
Dried flower clusters