Stem / Petiole borer: Primarily a borer in the stem and petiole, but the larva can make corridor-like excursions into the blade. Neither larvae nor mines can be distinguished from those of Pegomya flavifrons (Bladmineerders van Europa).

Larva: Details unknown.

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: April-May and September-October (Hering, 1957).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Recorded in Britain by Ackland (1978) including Anglesey, Berkshire, Brecon, Buckinghamshire, Caernarvonshire, Cambridgeshire, Cardiganshire, Carmarthenshire, Cumberland, Denbighshire, Dorset, Durham, East Cornwall, East Gloucestershire, East Kent, East Norfolk, East Ross, East Suffolk, East Sussex, Easterness, Elgin, Glamorgan, Herefordshire, Huntingdonshire, Isle Of Wight, Merionethshire, Monmouthshire, Montgomeryshire, North Essex, North Hampshire, North Lincolnshire, North Somerset, North Wiltshire, North-east Yorkshire, Nottinghamshire, Oxfordshire, Pembrokeshire, Radnorshire, Shropshire, South Aberdeen, South Devon, South Essex, South Hampshire, South Wiltshire, Stafford, Surrey, Warwickshire, West Cornwall, 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).

Also recorded in the Republic of Ireland (Michelsen, in Fauna Europaea).

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, Belgium (Gosseries and Ackland, 1991; de Meijere, 1939), Austria, ? Bulgaria, ? Corsica, Czech Republic, Denmark, Faroe Is., Finland, French mainland, Germany, Hungary, Italian mainland, Norwegian mainland, Poland, Russia - East, North, Central and Northwest, Slovakia, Spanish mainland and Switzerland (Michelsen, in Fauna Europaea).

Also recorded in East Palaearctic and Neractic Region (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: