Can anyone help me with this Lauxaniid, which keys out I think in Laurence Clemons' key as Sapromyza albiceps but confirmation would be helpful.  It has a strong lateral intra-alar, no black spots but brownish areas on the outer abdominal segments, arista pubescent, no thoracic stripes, little or no darkening on 3rd antennal segment, palps or wings, and frons not whitened.  A lovely little fly but delicate when dry and fell apart too easily, so no further examination possible