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A small black colour fly, size average 2-4mm, abundance at bread production factory.
The break occur after h, but no break found before end of R1, Sc seem incomplete....
From those characteristic, i was unable to identify through any handbook....
Anyone can help me?

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Less zoom for whole wing shape

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Entire fly body

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Identifying flies through liquid is always a difficult job - if you dry and pin it then everything will get easier. Remember, that most keys to flies will assume dry specimens.