Last modified: Dec. 3, 2024, 2:39 p.m.
An uncommon species in Belgium, mainly observed in the northern part.
Native
The larva mines the leaves of the food plant, at first a gallery in which the frass is deposited in an irregular line in the middle. Later the larva changes to another leaf and causes a blotch. Sometimes several larvae occupy the same leaf, and the blotches merge into one big blotch, occupying the entire leaf surface. When the larvae leave the mine, the leaf turns brownish.
Full-grown larvae pupate in a whitish cocoon attached to a leaf or to leaf litter on the ground, occasionally inside the mine.
The species hibernates in the adult stage. Adults hide in thatch, houses, hollows and other shelters.
One generation a year from July, hibernating till late May of the next year.
Several species of Onagraceae, like Epilobium ssp. or Circaea lutetiana etc.
Open areas in woodland, preferably shaded situations.