Leaf-mine: The reddish frass is linear, later in arcs, finally dispersed (British leafminers).

Long corridor, that widens only little, and winds freely through the leaf, not influenced by the venation. In thick, sun-exposed leaves the mine may be much shorter, especially in Cotoneaster, Malus and Pyrus. Frass brown, in arcs. (Bladmineerders van Europa).

The mine is also illustrated in UKMoths and British leafminers.

Larva: The larva is green (British leafminers). The larva is illustrated in Bladmineerders van Europa.

Pupa: The cocoon is illustrated in British leafminers.

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: September - October (British leafminers; UKMoths).

Time of year - adults: A single-generation species with adults flying in June, and the larvae feeding in September and October (UKMoths).

Distribution in Great Britain and Ireland: Common throughout much of the British Isles (UKMoths) including Ayrshire, Banff, Bedfordshire, Brecon, Buckinghamshire, Cambridgeshire, Cheshire, Cheviotland, Denbighshire, Derbyshire, East Cornwall, East Gloucestershire, East Kent, East Norfolk, East Suffolk, Glamorgan, Herefordshire, Hertfordshire, Huntingdonshire, Kincardine, Mid-west Yorkshire, Middlesex, Monmouthshire, North Ebudes, North Essex, North Hampshire, North Somerset, North Wiltshire, Northumberland South, Shropshire, South Aberdeen, South Devon, South Essex, South Hampshire, South Lancaster, South Wiltshire, South-east Yorkshire, Stafford, Surrey, Warwickshire, 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) 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, Belgium, Bosnia and Herzegovina, Bulgaria, Corsica, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, ? Greek mainland, Hungary, Italian mainland, Latvia, Lithuania, Norwegian mainland, Poland, Romania, Russia - Central, East and Northwest, Slovakia, Slovenia, 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: