Stem-borer:
Details
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.
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 and Ireland: Currently unknown.
Hosts
elsewhere:
Time
of year - larvae: Currently unknown.
Time
of year - adults: July.
Distribution
in Great Britain and Ireland: Suffolk (Chillesford) (Spencer, 1972b: 45), East Kent, Glamorgan, West Kent, and West Suffolk (NBN
Atlas). Distribution
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
(Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.
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