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Lifestyle: Unknown.

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).

Comments: Host unknown, possibly Aster tripolium (Spencer, 1972b: 61).

Hosts in Great Britain and Ireland: Currently unknown.

Hosts elsewhere: Currently unknown.

Time of year - larvae: Currently unknown.

Time of year - adults: June-September.

Distribution in Great Britain and Ireland: Local. Kent (Deal), Essex (Manningtree and Walton-on-the-Naze), Suffolk (Barton Mills) and Norfolk (Northrepps) (Spencer, 1972b: 61).

Distribution elsewhere: Widespread in continental Europe including Sweden (Spencer, 1976: 301), Germany (Spencer, 1976: 562), Austria, Belgium, Bulgaria, Canary Is., Czech Republic, Estonia, Finland, French mainland, Greek mainland, Hungary, Lithuania, Poland, Spanish mainland and Ukraine (Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.