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 Dempewolf (2001:102).
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: Currently unknown.
of year - larvae: Currently unknown.
of year - adults: July.
in Great Britain & Ireland: Suffolk (Chillesford) (Spencer, 1972b: 45), East Kent (VC15), Glamorganshire (VC41) and West Suffolk (VC26) (NBN
elsewhere: Widespread but uncommon in Europe (Spencer, 1972b: 45; Spencer, 1990:
64) including Germany, Holland, Denmark, Finland, Sweden, Russia
(Spencer, 1976: 161), Belgium,
Czech Republic, European Turkey, French mainland and The Netherlands
(Martinez in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.