Stem-borer:
Larva feeding as internal stem-borer (Spencer, 1972b: 119).
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).
Comments:
This species should not be confused with Phytomyza trivittata
Frost recorded in the U.S.A. and believed to feed in the seeds of
Cordylanthus nevinii (see Spencer,
1990: 233-4).
Galium
mollugo is treated as Galium
album (Hedge Bedstraw) by Stace (2010).
Hosts in Great Britain and Ireland:
Hosts
elsewhere: Currently unknown.
Time
of year - larvae: Currently unknown.
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Widespread in southern England
including Surrey (Box Hill), Hampshire (Beaulieu), Gloucester (Blaise
Woods) and Somerset (Radstock) (Spencer, 1972b: 64) and Cambridgeshire, North Somerset and South-west Yorkshire
(NBN
Atlas).
Also
recorded in the Republic of Ireland (Fauna Europaea). Distribution
elsewhere: Widespread in continental Europe including Denmark,
Sweden (Spencer, 1976: 324),
Germany (Spencer, 1976: 566),
Austria, Belarus, Czech Republic, Estonia, French mainland, Hungary,
Latvia, Lithuania, Norwegian mainland, Romania, Slovakia, Switzerland
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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