Last modified: Jan. 18, 2020, 2:14 p.m.
A very rare species in Belgium. Found sometimes in big numbers in suitable habitats.
Strongly polyphagous: greenish or reddish grey.
Mines can be recognised by the feeding holes being not neatly circular and misses the fringe of silken stalks around the margin because the case is not attached to the leaf with spinning, unlike Coleophoridae do.
See also bladmineerders.be
The larvae can be found from late September till June. They hibernate in their case.
In Belgium only the pharthenogenetic form occurs and the species is only present as females. Females are apterous, males are active during the night and sometimes come to light.
One generation a year: from late June to early August.
Polyphagous on herbaceous plants.