local species in Belgium, almost never in great numbers.
larva lives in the roots and the stem of Carduus nutans or
Cirsium vulgare. It hibernates in the larval habitation.
Pupation takes place in the upper part of the larval mine.
adults have been observed from May till well in August. During the
day, they rest on the larval foodplant, where they resemble a bird-dropping.
They are active at dusk and come to light.
Liège, Elsenborn, 10 July 2004.
(Photo © Chris Steeman)