The forewings of the males are grey brown, slightly irrorate, caused by scales being dark tipped and paler at the base.

The females have the scales almost uniformly dark fuscous with a purplish tinge, resulting in darker, velvety wing colour and contrasting silvery-white pattern.

The first costal and dorsal spots are joined to form a narrow fascia, wider at dorsum.

The majority of the mines on Vitis start at the leaf edge, but even there the egg is always near the vein in the tip of a lobe.

The frass is brown in the early mine, later black, in a rather thin line in the centre of the gallery.