The mine begins as a fine corridor, descends into the leaf sheath or stem, re-enters from there a few more times in the blade. Pupation in the tuber. Ofen the inflorescence of infested plants will wilt. (Bladmineerders van Europa).
Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.
The larva is described by de Meijere (1940b)
and Vos-de Wilde (1935).
Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).
Hosts in Great Britain & Ireland:
of year - mines:
June-July (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in England and Wales
including Warwickshire (Sutton Coldfield) (Robbins,
1991: 130); Berkshire (VC22), Cambridgeshire (VC29), East Cornwall (VC2), East Kent (VC15),
Glamorganshire (VC41), North Devon (VC4), North-east Yorkshire (VC62), Shropshire (VC40), South Wiltshire (VC8), Surrey and West Norfolk (VC28) (NBN
recorded in the Republic of Ireland (Pape, 2004 in Fauna Europaea).
Distribution elsewhere: Widespread in continental Europe including The Netherlands and
Belgium (Bladmineerders van Europa), Czech Republic, Denmark, Finland, ? Germany, Hungary,
Italian mainland, Lithuania, Norwegian mainland, Slovakia, Spanish
mainland and Switzerland (Pape, 2004 in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.