Leaf-mine: The larva makes a gallery by a vein or along the midrib and feeding branches can be seen emanating from this (British leafminers).

Broad full depth corridor overlying the main veins, with broad lobe-like, transparent, extensions into the blade. The corridor itself is quite opaque, white, later brown. The corridors, but not the extensions, are covered with silk at their inside. Almost all frass is ejected from the mine; grains may be seen trapped in silk below the mine. The larva rests lengthwise upon a vein and is very inconspicuous then. Pupation outside the mine (Bladmineerders van Europa).

Larva: The larva is illustrated in British leafminers and Bladmineerders van Europa.

Pupa: Pupation in detritus on the ground. The larva hibernates in its cocoon before it pupates (British leafminers).

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: July - September (British leafminers).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain including Bedfordshire, Cambridgeshire, East Norfolk, East Suffolk, Middlesex, North Essex, Stafford, Surrey, West Kent, West Norfolk and West Suffolk (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.

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, Belarus, Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia, French mainland, Germany, Hungary, Italian mainland, Latvia, Republic of Moldova, Poland, Portuguese mainland, Romania, Slovakia, Spanish mainland, 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: Unknown.