Published online by Cambridge University Press: 31 May 2012
Male blackish; head with frontal vitta opaque black, faintly tinged with red at base of antennae; parafacials and cheeks grayish pruinescent with reddish to black reflections; antennae and palpi black; arista paler on distal portion. Thorax and abdomen subshining with dark reflections, the former lightly brownish pollinose, viewed from behind with three faint, narrow vittae; the latter more densely pollinose, each tergum with a broad black subtriangular mark, hypopygium shining. Legs blackish. Wings tinged, more intensively basad, but not blackened; veins dark brown. Calyptrae tinged, halteres yellow.