Leaf-mine: In autumn the larva makes a long, brown corridor, and hibernates therein. In spring a new mine is made in another leaf. This one starts near the base of the blade, widens upwards, and finally forms an elongate yellowish irregular blotch of 3-5 cm in length. Pupation externa[; the pupa is attached to the mine without a cocoon.

According to Martini (1912a) a characteristic of this species is the extreme precision with which the mine joins up with the length venation of the leaf (Bladmineerders van Europa).

Larva: Body greyish green with a whitish dorsal line. Head and prothoracic plate light brown. Meso- and metanotum each with a lateral mark, connected by a whitish streak (Bladmineerders van Europa).

Pupa: Details unknown.

Adult: Not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera Dissection Group (check for update).

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Larvae are found in the autumn until April in the next year (Bladmineerders van Europa).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain including Cheshire, North Essex and Stafford (NBN Gateway, as Biselachista serricornis - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below) and Northern Ireland (Karsholt and van Nieukerken in Fauna Europaea).

Also recorded in the Republic of Ireland (Karsholt and van Nieukerken in Fauna Europaea).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread in continental Europe including Austria, Czech Republic, Danish mainland, Estonia, Finland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Poland, Russia - North and Northwest, Slovakia, Sweden, Switzerland and The Netherlands (Karsholt and van Nieukerken in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.