Last modified: March 20, 2021, 4:35 p.m.
A rare species throughout Belgium.
The caterpillar makes a straw coloured tubular case of about 10 mm long. The mouth angle is approximately 30°.
See also bladmineerders.be.
The caterpillars make plenty of little mines.
They overwinter in their cases and resume feeding in springtime until they are fully grown in April–May.
The adults come to light.
The adults fly in one generation a year from mid-June till the beginning of August.
C. follicularis accepts a whole range of food plants but the larvae are mostly found on Eupatorium cannabinum and Pulicaria dysenterica.
This species is mostly found in open areas and edges of forests and roads.