Larva boring the stems or leaf-stalk. Pupation internal (Spencer, 1972b: 19).
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).
Shining reddish brown; posterior spiracular processes separated
by their own diameter, each with an ellipse of some 30 minute bulbs
around the small central horn (Spencer, 1972b: 19).
Hosts in Great Britain & Ireland:
elsewhere: Currently unknown.
of year - larvae: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Local. Huntingdonshire (Woodwalton
Fen) (Spencer, 1972b: 19);
elsewhere: Belgium, Czech Republic and Lithuania (Martinez in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: