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Thank you Gerard and John.
Well today I worked with fly, which I collected. According my key Ch. bergenstammi has to have long black setas apicaly on scutellum, but there are only yellowish hair.
So: f - black; antenae 3-d - red-yellow, almost rounded; t - yellow with wide black ring; thorax - with short hair; arista - bare.
In my key it is Ch. chloris.
Is it possible?
Nikita