Leaf-miner:
Larva mining the narrow branches, not the stem. Pupation external
(Spencer, 1976: 259).
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.
Posterior spiracles unusually long, each with up to 14 bulbs (Spencer,
1976: 259).
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).
Brownish-black, black when parasitised (Spencer,
1976: 259).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines: Currently unknown.
Time
of year - adults: May.
Distribution
in Great Britain and Ireland: Uncommon. Hertfordshire (Barnet)
and London (Hampstead) (Spencer, 1972b: 54); Cambridgeshire and South-west Yorkshire (NBN
Atlas). Distribution
elsewhere: Widespread in continental Europe including Finland,
Germany, Russia (Leningrad area) (Spencer,
1976: 259), Czech Republic, French mainland, Poland and Slovakia
(Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown. |