mine in sepals and leaves (Spencer, 1972b: 88, as vulnerariae ; Spencer,
corridor, largely lower-surface, often following a vein. In the
end a short upper-surface corridor or small blotch. Pupation outside
the mine (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 (1926);
posterior spiracles each with approx. 16 bulbs (Bladmineerders van Europa).
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).
Orange-brown (Spencer, 1972b:
88, as vulnerariae).
Hosts in Great Britain & Ireland:
of year - mines: September.
of year - adults: Currently unknown.
in Great Britain & Ireland: Uncommon. Devon (Hope Cove)
(Spencer, 1972b: 88).
NBN Grid Map:
Distribution elsewhere: Widespread in continental Europe including The Netherlands (de Meijere, 1924), Belgium, European Turkey, Germany, Hungary,
Italian mainland, Lithuania, Poland, Sweden and Switzerland (Martinez
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.