We have only seen this species once in Woodlands Historic Park.
Note that the antennae of this species resembles that of suborder Brachycera, rather than those of almost all other species in division Cyclorrhapha. The high level classification of flies is based on many characteristics, not just the antennae, on which I have based my one-line definitions because they are the most distinctive characteristic visible in photos of adults. The term Cyclorrhapha actually means "Circular-crack" and refers to the way the pupal case splits to allow the emergence of the adult.
Classification
from Australian Faunal Directory
Order Diptera - Flies, 8955 named species in Australia at Nov. 2021
Division Cyclorrhapha - Flies having Short Antennae with a Bristle or Arista
Family Conopidae - Thick-headed Flies, 101 species in Australia
Genus ?
Species ?