Bark-mine: A gallery in the bark of the food plant generally mining upwards, similar to that of Trifurcula immundella, which usually mines downwards (British leafminers).

The mines are very hard to detect, but in late spring, the small white pupal cocoons are easy to spot among the dark stems (UKMoths).

Larva: Details unknown.

Pupa: Pupation in a white silken cocoon attached to a stem (British leafminers). The cocoon is also illustrated in UKMoths.

Adult: The adult is illustrated in UKMoths. The male genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera Dissection Group.

Hosts in Britain:

Hosts elsewhere: Unknown.

Time of year - larvae: September-May (British leafminers).

Time of year - adults: The adults fly during June and July (UKMoths).

Distribution in Great Britain and Ireland: Widespread and common throughout the whole of Britain (UKMoths) including Anglesey, Ayrshire, Banff, Bedfordshire, Caernarvonshire, Cheshire, Denbighshire, Derbyshire, East Kent, East Norfolk, East Ross, East Suffolk, Easterness, Elgin, Flintshire, Glamorgan, Herefordshire, Kincardine, North Aberdeen, North Essex, Pembrokeshire, Shropshire, South Aberdeen, South Lancaster, Stafford, Surrey, West Gloucestershire, West Norfolk, West Suffolk, Westmorland and Worcestershire (NBN Gateway - 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). See also British leafminers distribution map.

Also local in Ireland (UKMoths).

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, Belarus, Belgium, Czech Republic, Danish mainland, Estonia, French mainland, Germany, Hungary, Italian mainland, Luxembourg, Poland, Portuguese mainland, Romania, Russia - Northwest, Sicily, Slovakia, Spanish mainland, Sweden, Switzerland and The Netherlands. Also recorded in the Nearctic region and Australian region (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: