The caterpillars of Chlenias species have been recorded feeding on a wide variety of plants, see for example http://lepidoptera.butterflyhouse.com.au/naco/auctaria.html
I found it on my sleeve so I am not sure where I picked it up; eucalyptus if I brushed against a plant or pine if it dropped on me. I read that Chlenias species had adapted to exotic pine but were smaller as a result.