Leaf-mine: Mine mainly in basal leaves, running along mid-rib, with short lateral offshoots into leaf blade (Spencer, 1972: 71). Pupation takes place within the petiole or mid-rib (Spencer, 1976: 489).

Upper-surface corridor in the leaf base, radiating from the base of the midrib. Frass in long strings along the sides of the mine. Primary feeding lines quite conspicuous. Pupation within the mine, in the leaf base or even deeper in the plant (Bladmineerders van Europa).

Larva: Described by de Meijere (1926a, as hieracii) (Bladmineerders van Europa).

Puparium: Posterior spiracles each with 20 or more bulbs (Spencer, 1976: 489).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: From the autumn till May, then again in July-August (Hering, 1957).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Uncommon. Yorkshire (Malham Tarn), Argyll (Inverary) (Spencer, 1972: 71) and Warwickshire (Robbins, 1983-7).

NBN Grid map:

Distribution elsewhere: Widespread in continental Europe including Austria, Germany, Finland, Norway, Sweden (Spencer, 1976: 489), The Netherlands (Bladmineerders van Europa), Germany (Spencer, 1976: 578), Czech Republic, European Turkey, Lithuania and Poland (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.

Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea [127834]
NBN Gateway