I think this might be a hawk moth caterpillar, genus Psilogramma. It may be Psilogramma casuarinae. If so, it's a 'first' for our database! Here's a link to images from Canberra ... does it look a match to you? https://canberra.naturemapr.org/Community/Species/22107 Also, what was it feeding on? Let's wait to see if Glenn Cocking (our moth expert) has any other ideas.
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