Last modified: March 20, 2021, 12:06 p.m.
A very rare and local species in Belgium and observed for the first time in 2016 in LG.
Forewing ground colour white, some longitudinal ochreous streaks.
The larva constructs a spatulate leaf case, cut out from a leaf near the mid rib, measuring 10–15 mm when reaching its maximal size. The case is somewhat laced up just behind the mouth that has an angle of about 25° with the leaf.
This species mines at the underside of the leaf and often there are several mines in one leaf.
Caterpillars can be found from the autumn till June. The species hibernates in the larval stage.
The adult moths fly in one generation from the end of June till early August.
The species lives on several species of Lamiaceae, like: Stachys officinalis, S. recta, Teucrium chamaedrys and Teucrium scorodonia. It has also been recorded on Sideritis endressii and Stachys alopecurus but these plants do not occur in Belgium.