Last modified: May 5, 2021, 9 a.m.
A rare species in Belgium with most observations in the centre of the country.
Pale grey, head capsule brown, prothoracic plate and last abdominal plates darker brown.
The caterpillars feed under the bark of decaying wood from August, hibernating, till April.
Pupation in dead wood near the larval feeding place.
The adults are active especially during afternoon sunshine and they later come to light.
One generation a year from the end of May till August.
Different kinds of woody habitats, parks, gardens, especially on xerothermic, sandy soils.