Leaf-mine: Blotch mine restricted by leaf veins; frass in irregular lumps.

The mine begins at the leaf underside, close to a heavy vein, at a white egg shall that remains in place even in fully developed mines. Often several eggs at distances of about 1 cm along the vein. Each larva makes a large blotch without a preceding corridor. Almost all frass is concentrated in a big mass in the the initial part of the mine. In this part the mine is lower-surface (therefore one sees green leaf tissue overlying the frass mass), but further on the mine is upper-surface, in fact almost full depth and very transparant. In fresh mines remnants of the parenchyma are visible as secondary feeding lines. Often the older mines coalesce. Pupation outside the mine (Bladmineerders van Europa).

Forms a large blotch mine, which may contain several larvae, on the leaf upper surface. The white eggs are laid close to a vein (British leafminers).

Larva: The larva is illustrated in Bladmineerders van Europa.

Puparium: The puparium is illustrated in Bladmineerders van Europa.

Pegomya laticornis puparium Image: Willem Ellis (Bladmineerders van Europa)

Comments: Ackland in Chandler (1978) did not indicate whether his host record was British or Foreign and is therefore included under 'Hosts in Britain' and 'Hosts elsewhere

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June-July (Hering, 1957). Summer (British leafminers).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: England including Warwickshire (Merevale) (Robbins, 1991: 110); Berkshire, Cambridgeshire, Herefordshire, North Somerset, Oxfordshire and West Gloucestershire (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), Austria, Czech Republic, Denmark, ? Finland, French mainland, Germany, Poland, Romania, Russia - Central 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.