Leaf-mine: The mine is underside, small, at or near midrib. The lower epidermis with one strong crease (British leafminers).

Lower-surface tentiform mine, not longer than 20 mm, usually in the axil of a thick lateral vein, with one strong length fold. Pupa in a tough off-white cocoon that is fastened to the floor and the roof of the mine. Almost all frass is incorporated in the sides of the cocoon (visible with a loupe in transparancy as two dark lines). In autumn not infrequently five or more mines in one leaf (Bladmineerders van Europa).

The mine is also illustrated in UKMoths.

Larva: Pale green (Bladmineerders van Europa).

Pupa: The cremaster is illustrated in British leafminers. The pupa is illustrated in 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; in May and again in August (UKMoths).

Distribution in Great Britain and Ireland: Quite a common species throughout the British Isles (UKMoths) including Anglesey, Bedfordshire, Berkshire, Brecon, Buckinghamshire, Caernarvonshire, Cambridgeshire, Carmarthenshire, Cumberland, Denbighshire, Derbyshire, East Norfolk, East Suffolk, East Sutherland, Flintshire, Glamorgan, Herefordshire, Hertfordshire, Huntingdonshire, Kincardine, Merionethshire, Mid-west Yorkshire, Middlesex, Monmouthshire, North Aberdeen, North Devon, North Essex, North Hampshire, North Somerset, North Wiltshire, Pembrokeshire, Shropshire, South Aberdeen, South Lancaster, South Wiltshire, Stafford, Surrey, Warwickshire, West Gloucestershire, West Kent, 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 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 Albania, 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, North and Northwest, Sardinia, Slovakia, Sweden, Switzerland, The Netherlands, Ukraine and Yugoslavia (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: