This taxon group contains specimens that have a strong resemblance to members of the Sturmiini. All specimens have recumbent hairs and bristles with a tuft of stronger bristles on the most posterior tergites and the males all have a large, dense ‘Sturmia spot’ on the underside of the tergites.
This is a female:
This is a male:
and here is the male’s “Sturmia-spot”, the dense tufts of hair on the underside of tergites 4 & 5:
EDIT (Monty Wood 26/9/2010): These are all Winthemia sp.