Leaf-mine: A narrow contorted gallery leading to a whitish blotch with scattered frass centrally. The early gallery can merge with the blotch and there are often several to a leaf (British leafminers).

The larva begins by making a full depth corridor, erratic in width and course; frass black, in an irregular central line. Later the larva makes a blotch, with frass in irregular clouds. This blotch can be a continuation of the corridor, but may just as well be on a different leaf. Often several mines in a leaf; in such cases the entire leaf me be mined out. Mines white at first, turning brown later. The larva lies venter-upwards in the mine. Pupation external Bladmineerders van Europa).

The mine is also illustrated in UKMoths.

Larva: The larva is light yellow, with darker thoracic legs (British leafminers). The larva is also illustrated in Bladmineerders van Europa.

Pupa: Occasionally in a mined leaf or in a cocoon between the leaves or on the leaves (British leafminers).

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

Hosts in Britain:

Hosts elsewhere:

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

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Distributed locally in southern and western England and Wales, there are also scattered records from further north (UKMoths) including Anglesey, Bedfordshire, Caernarvonshire, Cambridgeshire, Cheshire, Denbighshire, Derbyshire, East Kent, Flintshire, Glamorgan,
Herefordshire, Hertfordshire, Leicestershire, Merionethshire, Middlesex, Monmouthshire, Montgomeryshire, North Devon, North Hampshire, North Somerset, Radnorshire, Shropshire, South Essex, South Lancaster, South Somerset, South Wiltshire, South-west Yorkshire, Stafford, Surrey, Warwickshire, West Cornwall, West Gloucestershire, West Kent, West Norfolk, West Suffolk 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). See also British leafminers distribution map.

Also recorded in Republic of Ireland (UKMoths; 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, Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Norwegian mainland, Poland, Russia - Central, Slovakia, 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.