without spiral or tightly wound loops. Mine shallow, dorsal or ventral,
greenish in transmitted light (only in small leaves sometimes full
depth, but then the frass, when corridor-like, always in separate
grains). One or more egg shells at the beginning of the mine on
the ventral surface of the leaf.
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.
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).
Ackland in Chandler (1978)
did not indicate whether his host records were British or Foreign
and are therefore included under 'Hosts in Britain' and 'Hosts elsewhere
Hosts in Great Britain & Ireland:
of year - mines: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including Warwickshire
(Coventry and Stoke Park) (Robbins,
1991: 70); Banffshire (VC94), Caernarvonshire (VC49), Cumberland (VC70), County Durham (VC66), East Kent (VC15), Easterness (VC96), Elgin, Glamorganshire (VC41), Merionethshire (VC48), North Hampshire (VC12),
Orkney (VC111), Surrey (VC17), West Suffolk (VC26) and Westmorland (NBN
elsewhere: Widespread in continental Europe including Andorra,
Austria, ? Corsica, Czech Republic, Denmark, Faroe Is., Finland,
French mainland, Germany, ? Hungary, Italian mainland, Norwegian
mainland, Poland, Russia - Central and North, Slovakia, Sweden and
Switzerland (Michelsen in Fauna Europaea).
recorded in the East Palaearctic (Michelsen in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.