Last modified: Feb. 26, 2023, 10:09 a.m.
An extremely rare and local species in Belgium.
Forewing ground colour uniformously dark brown, without any pattern.
Yellowish green. Head capsule, first thoracic segment and last abdominal segment blackish.
A rather large, greenish or yellowish blotch mine on the upperside of a leaf. In the last stage, the mine turns brownish. The mine is spun loosely on the inside of the mine and therefore the leaf does not curl and fold very much like with other Coptotriche species. The mine of this species can be distinguished from the related Coptotriche marginea (also living on Rubus) by its yellowish-brown colour, while the mine of C. marginea is white. Frass is ejected through a small opening at the underside of the leaf.
See also bladmineerders.be
No cocoon is constructed.
The eggs are oviposited on the upperside of a leaf.
The species hibernates in the larval stage, inside the mine, between leaf litter or still attached to the host plant. Pupation takes place in spring at the larval feeding place, without making a cocoon.
One generation a year: May–June.