Last modified: Oct. 9, 2019, 7:28 a.m.
A rather rare species in Belgium, mainly known from the northern (Kempen of Antwerpen and Limburg) and southern provinces (Ardennes).
Yellowish brown; head and prothoracic plate very dark brown.
See also bladmineerders.be
Eggs are oviposited at the base of Picea abies needles. The first instars mine during autumn in the base of the needles; later on they spin a narrow tube from where they further eat the contents of the needles. They also feed on the surface of a twig from a loosely spun gallery.
Pupation in May in a tough cocoon attached to a twig and some needles, close to the feeding place. This cocoon is well hidden because it is covered with particles of bark and frass.
The species hibernates as a larva. The adults can easily be beaten from the trees and at night they come to light.
One generation a year: from mid June till the end of August.