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).
Stubbs in Chandler (1978)
did not indicate whether his host record was British or Foreign
and is 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: Britain including Buckinghamshire (VC24),
Dorset (VC9), Huntingdonshire (VC31), Middlesex (VC21), North Hampshire (VC12), Shropshire (VC40),
South Essex (VC18), South Hampshire (VC11), Staffordshire (VC39), Surrey (VC17), West Kent (VC16), West Sussex (VC13) and Worcestershire (VC37) (NBN
elsewhere: Widespread in continental Europe, including Belgium,
Czech Republic, French mainland, Germany, Hungary, Poland, Slovakia,
Switzerland and The Netherlands (de Jong in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.