Last modified: Nov. 19, 2023, 3:51 p.m.
A very rare and local species in Belgium, not seen for a while.
Native
Wingspan 16–18 mm.
The dark green caterpillar has small black-green pinacula. She has a shiny black head. The prothoracic plate is black, the anal plate is black or greenish brown with black markings. The thoracic legs dark gray or black.
See also bladmineerders.be
In autumn the mine begins as a brown, narrow and inconspicuous, lower-surface corridor. The larva is capable of leaving its mine and restarting elsewhere, possibly in another leaf. In April – May of the following spring a full depth transparent blotch is made, from which most frass is ejected. The mined leaf soon drops, which makes the mine even more difficult to detect.
The adults can be found resting on trunks during the day, and later come to light.
The adults are on the wing during July and August.
Found on deciduous trees where mistletoe grows.