Leaf-mine: A linear track widens to blotch, frass in long threads (British leafminers).

Corridor, generally starting not far from the midrib, at a conspicuous, yellowish oviposition scar, suddenly and somewhat angular widening into a full depth blotch. Often the corridor is overtaken by the blotch, but it remains recognisable in the frass pattern. Frass in long threads. Pupation in the ground (Bladmineerders van Europa).

Larva: Larva white, gut-line green (British leafminers). The larva is illustrated in Bladmineerders van Europa.

Pupa: Details unknown.

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

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: June - August (British leafminers).

Time of year - adults: Flying from late April into May and can be netted during the day flying around the foodplant (UKMoths).

Distribution in Great Britain and Ireland: Locally but well distributed throughout Britain (UKMoths) including Bedfordshire, Buckinghamshire, Caernarvonshire, Cambridgeshire, Cheshire, Derbyshire, East Gloucestershire, East Ross, East Suffolk, Easterness, Elgin, Glamorgan, North Aberdeen, North Essex, Northamptonshire, Pembrokeshire, Shropshire, South Aberdeen, South Hampshire, South Lancaster, South Wiltshire, South-west Yorkshire, Stafford, Surrey, Warwickshire, 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 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, Belarus, Belgium, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Kaliningrad Region, Latvia, Lithuania, Norwegian mainland, Poland, Romania, Russia - Central and South, Slovakia, Sweden, Switzerland, The Netherlands and Ukraine (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.