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I can see the following. ta and tp are present so not Microsania. If ac are present then it should be Platypezina, but the wings are not brownish so let's suppose that ac are absent so Platypezinae. From that POV it's difficult to say whether tp is equal or shorter than the last section of M3+4 so we can't totally exclude Lindneromyia. But I'd rather say it's not the case. Anal cell is shorter than the last section of A1 so it's not Polyporivora. There I would stop.