Last modified: April 3, 2024, 7:10 p.m.
A very rare species in Belgium.
Native
Wingspan 8–9 mm. Dissection is recommended to separate the adult from the very similar Elachista albidella and Elachista eleochariella.
The larva is yellowish green or grey, with a brown or black head and a light brown prothoracic plate.
The larval mine appears from March to May.
Pupation is under a girdle in the angle of a leaf, with emergence from May to early August.
Adults are on the wing from May till the end of August, may be bivoltine.
The larva feeds on Carex acutiformis, C. paniculata or C. vesicaria.
Inhabits wet or acid areas.