Leaf-mine: A linear mine rigidly following the margin of the leaf segment (Spencer, 1976: 369).

A long, narrow, upper-surface initial corridor, starting in the centre of a leaflet, that suddenly widens. The wider later corridor closely follows the leaf margin. Frass in irregularly dispersed granules. Primary feeding lines apparent. Pupation outside the mine; exit slit in upper epidermis (Bladmineerders van Europa).

Larva: The larva is described by de Meijere (1937) and illustrated in Bladmineerders van Europa; posterior spiracles with approx. 16 bulbs.

Puparium: Black, shining, smooth and oval; posterior spiracles scarcely raised and each with an ellipse of some 16 bulbs (Spencer, 1976: 369). The puparium is illustrated in Bladmineerders van Europa.

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June, August, October.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Middlesex (Scratch Wood and Mill Hill) (Spencer, 1972: 92) and Warwickshire (Hartshill and Sowe Common) (Robbins, 1991: 64).

NBN Grid map:

Distribution elsewhere: Widespread in continental Europe including Denmark, Finland, Italy, Norway, Sweden, Switzerland (Spencer, 1976: 369), The Netherlands, Belgium, Luxembourg (Bladmineerders van Europa), Germany (Spencer, 1976: 369), Czech Republic, Estonia, French mainland, Hungary, Lithuania, Poland, Romania and Switzerland (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.