Leaf-mine: An upper surface corridor mine, becoming strongly broadened and blotch-like. The mine can occupy a considerable part of a small leaf. Mines frequently merge and then accommodate several larvae. Pupation external, in the soil.

Upper-surface corridor, in the end strongly widened and blotchy; may occupy a large portion of smaller leaves. Mines may coalesce, and contain several larvae then. Primary and secondary feeding lines very conspicuous (picture). Pupation outside the mine (Bladmineerders van Europa).

Makes upper surface blotches (British leafminers).

Larva: The anterior spiracles of the larva are illustrated in Bladmineerders van Europa.

Puparium: Yellow; anterior spiracle openings arranged in large arcs, not elevated on a fan-like structure; posterior spiracles each with a central opening larger and more raised than the lateral openings.

Adult: The adult is illustrated in the Encyclopedia of Life.

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: October-November.

Time of year - adults: May-June.

Distribution in Great Britain and Ireland: Throughout the British Isles (White, 1988) including Warwickshire (Sutton Park and Corley) (Robbins, 1991: 110), West Yorkshire (Cromwell Bottom LNR) and Cumbria (Roudsea Wood and Mosses NNR) (British leafminers), Ayrshire, Berkshire, Buckinghamshire, Cambridgeshire, Dorset, East Kent, East Gloucestershire, East Kent, East Ross, East Sussex, Easterness, Glamorgan, Herefordshire, Huntingdonshire, Isle of Wight, North Hampshire, North Somerset, North Wiltshire, South Aberdeen, South Wiltshire, South Lancaster, South Wiltshire, South-west Yorkshire, Stafford, Surrey, Warwickshire, West Sussex, 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).

Also recorded in the Republic of Ireland (Merz and Korneyev, 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 The Netherlands (de Meijere, 1939), Belgium (Leclercq and de Bruyn, 1991), Luxembourg (Bladmineerders van Europa), Albania, Austria, Bulgaria, Czech Republic, Denmark, Finland, French mainland, Germany, Hungary, Italian mainland, Lithuania, Norwegian mainland, Poland, Romania, Russia - Central, Slovakia, Sweden, Switzerland and Ukraine (Merz and Korneyev, in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: