This species seems to gather at hilltops.
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 Tachinidae - Parasitic Flies, 520 named species in Australia
Subfamily Tachininae
tribe Tachinini
Genus Microtropesa
Species Microtropesa sinuata