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To tell you truth I don't know what is Anthomyiida, only general impression. In this case a lot is visible, so I'll try.
1. Calyptrate fly - the line (I don't know English name) on thorax without long break.
2. Anal vein is long.
3. Who else if not Anthomyiidae.
Could I ask you confirm the family.
01 okt, Moscow region, 8-10mm