Leaf-mine: The mine is 15-20 mm long with several creases in lower epidermis. It is lower side, strongly arched; a central green patch with brown flecks around edges (British leafminers).

Lower-surface tentiform mine, usually between two side veins. Pupa in white cocoon in a corner of the mine, attached to both the roof and the floor of the mine; frass heaped in opposite corner (Bladmineerders van Europa).

Larva: The larva is illustrated in Bladmineerders van Europa.

Pupa: The pupa is illustrated in British leafminers and Bladmineerders van Europa.

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:

Time of year - larvae: July, September - October (British leafminers).

Time of year - adults: Two generations, flying in May and August (UKMoths).

Distribution in Great Britain and Ireland: Found throughout Britain (UKMoths) including Bedfordshire, Brecon, Cambridgeshire, Cheshire, Denbighshire, Derbyshire, East Cornwall, East Kent, East Norfolk, East Suffolk, East Sussex, East Sutherland, Flintshire, Glamorgan, Herefordshire, Hertfordshire, Huntingdonshire, Kincardine, Merionethshire, Middlesex, Monmouthshire, North Aberdeen, North Ebudes, North Essex, North Hampshire, North Somerset, North Wiltshire, Shropshire, South Aberdeen, South Devon, South Hampshire, South Lancaster, South Wiltshire, Stafford, Surrey, West Gloucestershire, West Kent, West Lancaster, West Norfolk, West Suffolk, Westerness, 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, Bulgaria, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Luxembourg, Republic of Moldova, Norwegian mainland, Poland, Romania, Russia - Central and Northwest, Slovakia, Slovenia, Spanish mainland, 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.