Stem-borer:
Larva boring in stem (Spencer,
1976: 46).
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).
Hosts in Great Britain and Ireland: Currently unknown.
Hosts elsewhere:
Time
of year - larvae: Currently unknown.
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Recorded from England by Spencer
(1976: 45). Distribution elsewhere: Widespread in continental Europe including Denmark, Sweden, Austria, Hungary
(Spencer, 1976: 45), Canary
Is., Czech Republic, Germany, Lithuania, Poland, Slovakia and Spanish
mainland (Fauna Europaea).
Also
recorded in Egypt and Israel (Spencer,
1976: 45). NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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