A rare species in Belgium.
larva feeds on Convolvulus arvensis, Calystegia and Ipomoea.
The mine is characterised by a narrow gallery, containing linear black
frass and later leading to a small clear blotch. Subsequently the larva
frequently changes its mine, and sometimes also its leaf, making a
series of irregular clear blotches from which all frass is ejected. On
the underside of the leaf, the larva also constructs an open network of
silken threads which provide a platform from which the larva can eat
and rest. The grey-brown pupa is attached to a leaf without a cocoon.
adults fly in two generations a year; during August and from late
September till May. They hibernate as an adult. They come to
Antwerpen, Kontich, 20 September 2003.
(Photo © Leo Janssen)