Leaf-mine: A narrow, inconspicuous stem mine. Pupation at the end of the mine (Spencer, 1976: 64).

Fine, upper- or lower-surface corridor, ending in a thick vein. From there the mine extends finally to the rind of the stem. There also the pupation takes place, usually not far from the root collar. Mines in the stem rind often are conspicuous through a red discoloration (Bladmineerders van Europa).

Larva: The larva is described by de Meijere (1937a).

Puparium: Yellowish or completely black; anterior spiracles projecting through epidermis; posterior spiracles each with 3 bulbs (Spencer, 1976: 64).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June-September (Hering, 1957).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Widespread in south, not uncommon. Surrey (Box Hill and Epsom), Dorset (Portland), Cambridgeshire (Burwell) and Suffolk (Woodditton) (Spencer, 1972: 27); Cambridgeshire, Glamorgan and Monmouthshire (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).

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 from Spain to the [former] U.S.S.R., including Denmark, Sweden (Spencer, 1976), Belgium (de Bruyn and von Tschirnhaus, 1991), Austria, Canary Is., Czech Republic, Estonia, European Turkey, Germany, Hungary, Italian mainland, Lithuania, Poland, Switzerland and Yugoslavia (Martinez 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.