Cup-moth parasite fly.
About 9 months earlier I found a moth cocoon which was slightly unusual in size, colour and location so I decided to grow it out. Today shock, horror and delight when a prickly looking fly opened the lid, climbed out and stretched it's wings.
On a Grevillea stem growing closely entwined with a small eucalyptus tree in a local nature reserve.
Victim was Doratifera vulnerans - Mottled Cup Moth
This one is Tachinidae probably Winthemia genus.