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Hello Eric,

Musca osiris was originally my idea (in other forum), after I found no similar fly in the gallery or elsewhere on the net. Mostly the orange triangle markings at the abdomen excluded all flies like Eudasyphora or similar. I don't know, what else it could be. :|

Please take a look at this picture:
https://www.inatu...sca-osiris (weak bend in M vein)

and this one:
https://www.inatu...sca-osiris (bluish thorax gloss)