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Hi, this may be Sarcophaga itself I think, but genital region is red, does this narrow down the possibilities? I remember that some Sarcophaga species have...
In garden, beginning of August.

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Closer:

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I think Sarcophaga (Bercaea) africa.

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Thank You for your quick help!

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Stephane, what is your id based on? I collected hundreds of Sarcophagids this year from the same location as Walter, but have not found a single specimen of S. (Bercaea) africa. CC. 20% of the males had red genitalia, and they all belonged to other subgenera.

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Red genitalia, very weak anterior dorsocentrals, prescutellar acrostichals absent or very weak, strong marginals on the protandrial segment - all add up to Bercaea (but you have the advantage of specimens to examine!;))

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Of course, I'm not a specialist and I can be quite wrong. Within the Sarcophagini with red epandrium, I think we can rule out the s.g. Heteronychia/Discachaeta because of the unequal post dc (anterior ones hair-like and posterior ones strong). After that, I cannot see a pair of differentiated prescutellar acr, that let me think we can also rule out the remaining subgenera Parasarcophaga, Liosarchophaga...
So s.g. Bercaea is my guess.
And as usual with Sarcophagidae a reliable ID is possible only with genitalia examination...

EDIT : Tony was faster than me...:)

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And this fly was faster than me :) - it flew away before I could catch it, but I have some specimens also, I already tried to determine some by genitals. If I find something interesting I'll make microscope photos and put them here. Anyway, thanks for everyone's cotribution!

Walter

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Nice. I got sloppy and only investigated the genitalia, so I have little clue how to separate subgenera based on external characteristics.

Species with red epandrium tend to be smaller on the average than those with black epandrium, and smaller flies tend to fly off easier. I may have lost this species for the same reason as Walter, because they flew off after the photos.