Leaf-mine: Mine greenish with only single larva, initially running towards apex of leaf before turning back down and developing into a broad blotch (Spencer, 1972: 32, fig. 84; Spencer, 1976: 140, fig. 251).

Deep, transparant corridor-blotch. The mine begins not far from the leaf apex, at first running upwards as a narrow corridor, then reverses and quickly widens to a blotch. A single larva per mine. Frass in isolated grains. Pupation inside or outside the mine (Bladmineerders van Europa).

The mine is illustrated in the Encyclopedia of Life.

Larva: The larva is described by de Meijere (1943, as ocellaris) and Spencer (1973), Beri (1984a) and Dempewolf (2004a). The rear end of the body is cut off more or less at a right angle, not obliquely, as in many other Agromyza species. Front spiraculum with 6-8 bulbs in an ellips; rear spiracula on a protuberance, set widely apart (about 4 times their diameter), with 3 bulbs. Mandible alternating, with 2 teeth, the distal one much larger than the proximal. Behind the mandibles a field with fine, recurved spinulation (character of the ambigua species group of Griffiths, 1963a) (Bladmineerders van Europa).

Puparium: Reddish brown; posterior spiracles are on short conical projections and each has 3 bulbs (Spencer, 1976: 140, fig. 252). The puparium is illustrated in the Encyclopedia of Life.

Adult: The adults is illustrated in the Encyclopedia of Life.

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: April till September (Bladmineerders van Europa).

Time of year - adults: June-July. Three generations have been observed in England (Spencer, 1976: 141).

Distribution in Great Britain and Ireland: Widespread in Britain including Kent (Darenth), Berkshire (Windsor Forest), Gloucester (nr Bristol), Devon (Brixham and Paignton), Huntingdonshire (Woodwalton Fen), County Durham, Sunderland and Banff (Falls of Tarnash) (Spencer, 1972: 35), Cambridgeshire, North Lincoln, Pembrokeshire, South-west Yorkshire 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 Austria, Germany, Sweden, Norway, Spain (Spencer, 1976: 139), Belgium (de Bruyn and von Tschirnhaus, 1991), Balearic Is., Belarus, Canary Is., Crete, Croatia, Czech Republic, Dodecanese Is., Estonia, European Turkey, French mainland, Italian mainland, Lithuania, Poland, Romania, Sicily and Slovakia (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 [128939]
NBN Gateway