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~7.5mm long
Curved lower edge of mesopleura, with no teeth.
One "spike" which I suspect is the tip of the ovi-positor. But unlike the Primeuchroeus sp we found in Lobethal, it was never extended; so not sure. Perhaps a male with a pseudostinger?
https://www.ellura.info/Diptera-Hymenoptera.html#Primeuchroeus-sp
https://inaturalist.ala.org.au/observations/25659050

~9.5mm
Has a damaged ovi-positor sheath.
This is the 4th we've photographed here.
Very difficult to get wing venation shot.
Very distinctive & colourful.

Here's our first:
https://inaturalist.ala.org.au/observations/104012370

Notice the different coloured sheens in different lighting situations. So the blue sheen isn't a reliable diagnostic in photo's. Can be seen by the naked eye though.
www.ellura.info/Blattodea-Coleoptera-Hemiptera.html#Creophilus-erythrocephalus

This is the first time we've found this species on Ellura, but they are known in SA previously.
A Fleshfly-mimicking Bristle Fly
@carnifex Lorin, thought you might find this interesting, given you helped us in the past with our fleshfly id https://inaturalist.ala.org.au/observations/104012548

It parasitised a moth that we caught, which cocooned the same day. The fly emerged exactly 5 weeks from when the moth pupated.

The 4 obs in this set:
Moth Lava: https://inaturalist.ala.org.au/observations/117656081
Moth Pupa: https://inaturalist.ala.org.au/observations/117657244
Fly Pupa: https://inaturalist.ala.org.au/observations/117658034
Fly Adult (this): https://inaturalist.ala.org.au/observations/117658387