Cuckoo wasp - Genus Primeuchroeus

Making her getaway.

https://museum.wa.gov.au/research/collections/terrestrial-zoology/entomology-insect-collection/entomology-factsheets/cuckoo-wasps

As the name ‘cuckoo wasps’ suggests, females lay their eggs in the nests of other insects. Among the most common hosts for cuckoo wasps are the various mud-daubing wasps that build their nests around houses, sheds and other human constructions. This accounts for many finds, people either noticing the brightly coloured wasps hovering about walls as they search for a host nest, or finding them after they’ve entered a building and got trapped on the inside of a window pane.