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D. sordida also has dark halteres.

If you want to identify it by what it is instead of what it is not, you will need clearer pictures of the pleura and head behind and below the eyes. The pleura may have a shiny spot behind and above the fore coxa. The cheek may be nearly as broad as the first flagellomere, or clearly narrower. There may be a polished "subocular crescent".