Mine of Liriomyza tanaceti on Tanacetum vulgare Image: Willem Ellis (Bladmineerders van Europa)

Leaf-mine: A narrow linear mine, with frass in black strips (Spencer, 1972: 57; Spencer, 1976: 274). Narrow upper-surface corridor.

The corridor often follows nerves, causing it to branch now and then. Frass in strings. Pupation outside the mine (Bladmineerders van Europa).

Larva: The larva is described by de Meijere (1925). Posterior spiracles each with an ellipse of 8-10 bulbs (Spencer, 1972: 57; Spencer, 1976: 274).

Puparium: Yellowish-black (Spencer, 1976: 274).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: July, October.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Surrey (Godalming) (Spencer, 1972: 57) and Warwickshire (Allesley) (Robbins, 1991: 117).

Also recorded in the Republic of Ireland: Co. Clare (Burren) and Co. Kerry (Dingle) (Spencer, 1972: 57).

NBN Grid map:

Distribution elsewhere: Widespread and not uncommon in much of western Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 274), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (Scheirs, de Bruyn and Verdyck, 1993), Germany (Spencer, 1976: 562), Canary Is., French mainland, Lithuania, Poland and Spanish mainland (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: