Leaf-mine: Blotch mine. Broad corridor, widening into a large transparant blotch with 1 or several, proportionally very large larvae that quickly completely mine out a leaf, then move to another leaf. At the start of the first mine at the leaf underside 1 or more oval egg shells. Pupation outside the mine (Bladmineerders van Europa).

Forms large blotches on leaves (British leafminers).

Larva: The larva is illustrated in Bladmineerders van Europa.

Puparium: Details unknown.

Comments: Ackland in Chandler (1978) did not indicate whether his host records were British or Foreign and are therefore tentatively included under 'Hosts in Britain' and 'Hosts elsewhere'.

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June-September.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain including Warwickshire (Coventry, Brownhill, Sutton Coldfield and Tile Hill) (Robbins, 1991: 69), Hampshire (Fleet) (British leafminers); Berkshire, North Hampshire, Oxfordshire, South Hampshire, South Lancaster, Surrey, West Gloucestershire and West Kent (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 including The Netherlands (Bladmineerders van Europa), Belgium (Gosseries and Ackland, 1991), Czech Republic, Denmark, Finland, French mainland, Germany, Hungary, Norwegian mainland, Poland, Russia - Central, Slovakia and Sweden (Michelsen, 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.