Mine of Liriomyza eupatoriana on Eupatorium cannabinum Image: Rob Edmunds (British leafminers)

Leaf-mine: Mine filling apex of leaf segment, with short final section extending further into leaf. Pupation normally in leaf at end of mine.

Corridor, almost invariably in the ultimate cm of the tip of a leaf segment. The corridor is contorted so strongly that a compact secondary blotch is formed. When exeptionally the mine is not in the leaf tip, it is closely adjoining the leaf margin; never is a mine formed in the leaf centre. Frass irregular, in black threads and lumps, frequently at wide intervals, on alternate sides of the mine. The mine is upper-surface, except for the very last section that is lower-surface. Here pupation takes place. The puparium projects for about half of its length out of the mine (Bladmineerders van Europa).

A convoluted upper side gallery that may form a secondary blotch filling apex of leaf segment. Frass in closely spaced grains that may form streaks or strings (British leafminers).

Larva: Posterior spiracles each with 3 bulbs (Bladmineerders van Europa).

Puparium: Details unknown.

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: June-August.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Wiltshire (Heddington) and Cambridge (Chippenham Fen) (Spencer, 1972: 54).

NBN Grid map:

Distribution elsewhere: Widespread in continental Europe, including Germany (von Tschirnhaus, 1999), Czech Republic, French mainland, Hungary, Italian mainland, Lithuania, Poland, Spanish mainland and Yugoslavia (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.