Last modified: March 9, 2023, 5:58 p.m.
A very rare and local species in Belgium, more observed in the northern part.
The adults have been observed from mid May till August in apparently two generations. They fly around conifers in sunshine during the afternoon and on the wing again at dusk. They come sparsely to light
The larva lives in a silk-lined tunnel under the bark of Pinus sylvestris. It feeds also on Pinus nigra, Picea and Abies. Hibernates as a larva. Pupation in the larval habitation during next spring.