local species in Belgium, mainly observed in the southern part.
larvae live gregariously in silken galleries close to the base of
a leaf, feeding nocturnally on the underside of the leaves of Plantago
lanceolatum or Plantago major. They pupate in a tough
whitish cocoon in the soil.
adults fly in two difficult to separate generations a year; onwards from mid April towards June
and in July-August. They are active in the sunshine and at dusk
and later come to light.
Namur, Merlemont, 14 August 2004.
(Photo © Chris Steeman)