coloured corridor (here and there with even paler segments). Pupation
within the mine (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.
Body segments with thick transverse ridges, that bear small teeth, enabling the larva to brace itself in the mine. Not only the anterior and posterior pairs of spiracula, known in the Acalyptrate Diptera are present, but also six pairs inbetween (Bladmineerders van Europa).
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).
Chandler (1978) did
not indicate whether his host record was British or Foreign and
is therefore included under 'Hosts in Britain' and 'Hosts elsewhere'.
Hosts in Great Britain & Ireland:
of year - mines:
September-October (Hering, 1957).
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including Ayrshire (VC74),
Cambridgeshire (VC29), Cardiganshire (VC46), Dorset (VC9), County Durham (VC66), East Gloucestershire (VC33),
East Kent (VC15), Glamorganshire (VC41), Herefordshire (VC36), Huntingdonshire (VC31), Mid-west Yorkshire (VC64),
North Lincolnshire (VC54), North Wiltshire (VC7), Oxfordshire (VC23), Radnorshire (VC43), Renfrewshire (VC76),
South Hampshire (VC11), South Lancashire (VC59), West Cornwall (VC1), West Gloucestershire (VC34),
West Kent (VC16), West Suffolk (VC26), Westmorland (VC69) and Worcestershire (VC37) (NBN
recorded in the Republic of Ireland (Pollett, 2004 in Fauna Europaea).
NBN Grid Map:
elsewhere: Widespread in continental Europe including The Netherlands
(de Meijere, 1939), Belgium
and Grootaert, 1991), Austria, ? Croatia, Czech Republic,
Denmark, European Turkey, Finland, French mainland, Germany, Greeze,
Hungary, Italian mainland, ? Macedonia, Poland, Romania, Russia
- Central, ? East, North and ? Northwest, Slovakia, ? Slovenia,
Spanish mainland, Sweden, ? Ukraine and Yugoslavia (Pollett, 2004
in Fauna Europaea).
recorded from East Palaearctic, North Africa and Oriental region
(Pollett, 2004 in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.