Last modified: Sept. 29, 2022, 1:15 p.m.
A rather rare species in Belgium.
See also bladmineerders.be
The adults have been observed from June till August. They are active towards dusk and come to light.
The young larva mines inside a needle of Picea abies or Picea sitchensis, and it hibernates in that plates half-fed. Later on, it constructs a silken tube along which it retreats to deposit frass in the first mined needle.
Pupation in a white cocoon in the larbal tube or amongst leaf-litter.