Leaf
/ Stem mine: The mine starts in the leaf but the larva moves
to the stem (Spencer, 1976:
316).
The
mine starts in a leaf, that soon wilts (to find the mine, look for
this detail). Next the larva continues as a miner of the skin of
the stem (Bladmineerders van Europa).
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 de Meijere (1941).
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).
Posterior spiracles each with about 20 bulbs (Spencer,
1976: 316).
Comments:
Galium mollugo is treated
as Galium album (Hedge
Bedstraw) by Stace (2010).
Hosts in Great Britain and Ireland: Currently unknown.
Hosts
elsewhere:
Time
of year - larvae: June-July (Bladmineerders van Europa).
Time
of year- adults: Currently unknown.
Distribution
in Great Britain and Ireland: Added to British Checklist by
Deeming (1999). Carmarthenshire
and Glamorgan (NBN
Atlas).
Distribution
elsewhere: Widespread in continental Europe including Finland,
Germany, The Netherlands (Spencer,
1976: 316), Balearic Is., French mainland and Lithuania (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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