Oviposition in the base of the midrib, without giving rise to an
oviposition scar. The larva initially bores inside the midrib. Later
it leaves the midrib, forming a broad corridor in the blade, that
widens into a blotch. Finally the legless larva pupates in a globular
cocoon inside the mine. Because the mine develops at a time that
the leaf is fully developed, mined leaves are not disfigured (Bladmineerders van Europa).
Larva: The larvae of beetles have a head capsule and chewing mouthparts with opposable mandibles and lack abdominal legs.
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
Hosts in Great Britain & Ireland:
of year - larvae:
May and August (Hering, 1957),
June-August (Bladmineerders van Europa).
of year - adults: Unknown.
in Great Britain & Ireland: Widespred in Britain including
Anglesey (VC52), Berkshire (VC22), Cambridgeshire (VC29), Cardiganshire (VC46), Cheshire (VC58), Cumberland (VC70),
Denbighshire (VC50), Dorset (VC9), Dumfriesshire (VC72), East Gloucestershire (VC33), East Kent (VC15),
East Norfolk (VC27), East Ross (VC106), East Suffolk (VC25), East Sussex (VC14), Glamorganshire (VC41), Leicestershire (VC55),
Monmouthshire (VC35), North Hampshire (VC12), North Lincolnshire (VC54), Northamptonshire (VC32),
Shropshire (VC40), South Essex (VC18), South Lancashire (VC59), South Lincolnshire (VC53), South Wiltshire (VC8), Staffordshire (VC39), Surrey (VC17), Warwickshire (VC38), West Gloucestershire (VC34),
West Kent (VC16), West Lancashire (VC60), West Norfolk (VC28), West Suffolk (VC26), West Sussex (VC13),
Westerness (VC97), Westmorland (VC69) and Worcestershire (VC37) (NBN
Also recorded in Ireland (InvertebrateIreland Online).
NBN Grid Map:
elsewhere: Widespread in continental Europe including Bulgaria,
? Corsica, French mainland, Germany, Hungary, Italian mainland,
Moldova, Poland, Romania, Russia - Central, East, Northwest and
South, Slovakia and Yugoslavia. Also recorded in the East Palaearctic
(Alonso-Zarazaga in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.