Leaf-mine: The mine starts from brown spot, later filled with greenish frass. The mine is difficult to locate initially but becomes brown as it ages (British leafminers).

Egg at the underside, often in a vein axil. The mine is a slender, little widening corridor. Its first part is strongly contorted; the leaf tissue that is cut off thereby is killed, mostly resulting in a brown spot. The remainder of the corridor in contrast is very little contorted, often remarkably straight, when it runs alongside a vein. The corridor is almost completely filled with coiled frass, that is green when fresh, brown later. Pupation external (Bladmineerders van Europa).

Larva: The larva is yellow but appears green in mine (British leafminers).

The larva is yellow, but appears green when inside the mine. See Gustafsson and van Nieukerken (1990a) for a description (Bladmineerders van Europa).

Pupa: Details unknown.

Adult: Not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera Dissection Group (check for update).

Hosts in Britain:

Hosts elsewhere:

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

Time of year - adults: On the wing in May and August (UKMoths).

Distribution in Great Britain and Ireland: Occurring in southern and north-west England (UKMoths) including Bedfordshire, Buckinghamshire, Cambridgeshire, Carmarthenshire, Cheshire, Derbyshire, East Kent, East Norfolk, East Suffolk, Glamorgan, Hertfordshire, Huntingdonshire, Monmouthshire, North Essex, North Hampshire, North Somerset, Northamptonshire, Shropshire, South Lancaster, South Wiltshire, Stafford, Surrey, 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 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, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Lithuania, Poland, Russia Central, Sweden, Switzerland, The Netherlands and Ukraine. Also recorded in East Palaearctic (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.