Last modified: Feb. 28, 2021, 11:25 a.m.
A very local and rare species in Belgium.
Head brown; forewing ground colour golden brown; white pattern consisting of a quadrangular basal spot at dorsum, edged with dark brown scales; two costal and two dorsal striae, opposite to each other, the basal ones edged with brown scales on both sides, the proximal ones only at their basal side; a very small apical stria just before the apex; some white scales adjacent to a very dark brown horizontal line in the apical area. In the cilia a conspicuous brown-greyish hook.
A cocoon attached both to the roof and the bottom of the mine; some frass is incorporated in the cocoon.
The species hibernates in the pupal stage. After emergence of the adult, the pupal skin protrudes from the mine.
Two generations a year: May and July–August.
The species seems to prefer a xerothermic environment, like the sandy soils of the Kempen (AN and LI).