In the past only known from a record in 1862 around Dinant, but recently (2009) found again in the same province. By way of searching for mining lepidoptera, the species is already found in 3 provinces in just a few weeks time. More provinces will certainly follow.

The larva mines mature ferns, especially on  Asplenium scolopendrium, but also found on other Asplenium species and on Ceterach officinarium.  Pupation takes places in the larval case, which is often fixed against a midrib.

The adults fly in one generation a year during June. They are active during daylight, especially in early morning and in late afternoon.