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Hello,
Helpful fly friends taught me how to tell apart Phaonia and Muscina, so I try herewith, but it's not easy. This fly, seen on the Baltic Island of Usedom in August, rather matches the description of Muscina stabulans I found in the internet: "The fourth longitudinal vein (M1+2) of the wings is not bent and converges only slightly towards the vein in front of it... The legs of the false stable fly are partly red-gold or cinnamon." I see a very slight bend of the M1+2 vein, but is this sufficient to exclude Phaonia? And the scutellum is largely brown, not only its tip.
Please help once more!
Thanks, Sundew

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yes, Sundew. A Muscina. I'd tell the same.

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So M. stabulans indeed? Gabor said the other species have darker legs.

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Sorry Claudia, it's Phaonia valida which character is to have a slightly upcurved vein M1+2 at apex (an exception in Phaonia). M isn't enough bent for Muscina, amount of red coloration is too extended on scutellum and legs too pale for any Muscina.

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OK, once we have worked through the exceptions, discrimination will become much easier... Even Jorge was mistaken! I won't give up and check my photo stock for other similar Muscidae. Just wait!
Many thanks, Sundew

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hmm... I must be much care with muscids. Stephane is right. The degree of bent really is not enough for Muscina. But it is not easy to judge as we can see. Really I knew about that exception but forgot it.
Thanks Stephane for stopping my blunder.