A very rare species in Belgium, not often recorded. Hitherto less than 10 observations, but probably overlooked.
larva feeds in a flower-stem of Alisma plantago-aquatica.
It hibernates full-fed from October in a grey, silken cocoon in
the lowar part of the stem. Pupation in the stem.
adults have been observed from June till August. They are active at dusk and
later occasionally come to light.
Antwerpen, Viersel, 04 July 2003.
(Photo © Leo Janssen)