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A striking acalypterate, arista mictroscopically pubescent; pv's slightly converging, 2 pairs frontal bristles pointing outwards and backwards, both up near ocellae; deep jowls with rows of small setae; numerous interfrontal setae; vibrissal bristles very small if present; sc complete; cup cell closed; anal vein reaches wing edge; no dorsal pre-apicals..... diagnosis would be welcome, please.