Last modified: Sept. 20, 2019, 2:51 p.m.
A very rare and local species in Belgium, known only from some southern provinces.
Forewing ground colour unicolorous greyish, without any pattern.
The egg is oviposited on the upperside of a leaf.
Whitish green at first, turning yellowish in later stages; head capsule, first thoracical segment en last abdominal segment blackish.
A whitish, elongated blotch mine on the upperside of a leaf, almost always situated at a margin of the leaf. The frass is ejected from the mine.
See also bladmineerders.be
The later instars apply a lot of spinning inside the mine, causing the leaf margin to fold upwardly in order to conceal the mine and making it almost invisible.
Pupation inside the mine. The species hibernates in the pupal stage, between leaf litter on the ground.
The adults fly in one generation a year during May and June.
The species is oligophagous on Prunus with a clear preference for Prunus spinosa.
Xerothermic localities where the larval host plant grows.