Large Mud-nesting Wasp Mimicking Fly
In flight
Ellura
Rutilia-mimicking Bristle Fly
Profile
 
    
Rutilia-mimicking Bristle Fly (Anamastax cf sp)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)
Order: Flies (Diptera)
Family: Bristle Fly (Tachinidae)
Species: Rutilia-mimicking Bristle Fly (Anamastax cf sp)
This Photo:     Dorsal

Thank you James Lumbers for identifying this species for us

General Species Information:
Found on Ellura (in the Murray Mallee, SA) and elsewhere
~13mm long.
This is a very tentative id, and will most likely change if there is a revision of the group.
When we asked James if he could confirm if this was Rutilia for us he said "Seems to key out to Anamastax (Exoristinae), from Crosskey 1973." "The shape of head/face in profile is a bit more convex than that of Rutilia (epistome not produced at all), and the eye takes up more of the head than in Rutilia." There are variations in the setae as well. He then gave us a handy cheat sheet "There are some important characters you can depend upon to instantly determine if something isn't Rutilia (or Rutiliini for that matter): if it doesn't have a well-developed facial carina (between the antennal insertions) it isn't Rutiliini. If the eyes are distinctly haired, clearly visible at the magnifcation in these photos, then it isn't even in the Dexiinae; there may possibly be a single isolated hair here or there, but never a 'stuble' of hairs, let alone a 'crew cut' appearance."

Copyright © 2020- Brett & Marie Smith. All Rights Reserved. Photographed 28-Nov-2020
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.