Leaf-mine: A short, narrow, linear mine, generally closely following margin of leaf segment; in very small sections of a leaf producing a secondary blotch (Spencer, 1972: 89 (fig. 302), 92; Spencer, 1976: 401 (fig. 702), 402).

Upper-surface corridor, in the end widening so strongly that within the limited space of an umbelliferous leaf often a secondary blotch is the result. The upper-surface mine is preceded by a short lower-surface corridor, made by the first instar larva during the first part of this stage (Allen, 1956a). It is difficult to observe, also because it tends to follow the leaf margin. Frass in two untidy rows of isolated grains. Before pupation the larva leaves the mine through a semicircular exit slit in the lower epidermis (Bladmineerders van Europa)

A narrow mine, follows leaf marginand forms secondary blotches (British leafminers).

Larva: The larva is described by Allen (1957b, as anthrisci, conopodii, tordylii) and de Meijere (1926, as anthrisci) and illustrated in Bladmineerders van Europa. posterior spiracles with 16-22 bulbs.

Puparium: The puparium is illustrated in Bladmineerders van Europa. Shining black; posterior spiracles each with 16-20 bulbs (Spencer, 1976: 402).

Phytomyza chaerophylli puparium Image: Willem Ellis (Bladmineerders van Europa)

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: April-July, November. First generation mines normally in April, but larvae can be found feeding throughout the winter.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Common and widespread throughout Britain (Spencer, 1972: 92) including Warwickshire (Coventry) (Robbins, 1991: 64) and Inner Hebrides (Isle of Coll) (Bland, 1992); Cambridgeshire, Cheshire, Denbighshire, Flintshire, Hertfordshire, Middlesex, North-east Yorkshire, South-east Yorkshire, South-west Yorkshire and Surrey (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 (Martinez 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 and common throughout much of Europe including Denmark, Finland, Norway, Denmark (Spencer, 1976: 401), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (de Bruyn and von Tschirnhaus, 1991), Germany (Spencer, 1976: 570), Austria, ? Corsica, Czech Republic, European Turkey, French mainland, Hungary, Italian mainland, Latvia, Lithuania, Poland, Romania, Sardinia, Sicily, Sweden and Switzerland (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: