miner: Upper surface blotch, often rather narrow where it begins, but without
a real initial corridor. Frass in gradually larger grains scattered
in the mine. Never more than one larva in a mine. Pupation outside
the mine (Bladmineerders van Europa).
mine is also illustrated in British
The larvae of sawflies have a head capsule, chewing mouthparts with opposable mandibles, six thoracic legs and abdominal legs (although they may be reduced) (see examples).
The larva is illustrated in British
leafminers and Bladmineerders van Europa.
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
Hosts in Great Britain & Ireland:
The record on Castanea (British
leafminers) requires confirmation.
of year - larvae: Univoltine: summer (British
of year - adults: Currently unknown.
Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.
in Great Britain & Ireland: Widespread (British
leafminers) including Bedfordshire (VC30), Derbyshire (VC57), Dorset (VC9), East Cornwall (VC2), East Ross (VC106), East Sutherland (VC107), Hertfordshire (VC20), Huntingdonshire (VC31),
Mid-west Yorkshire (VC64), Middlesex (VC21), Monmouthshire (VC35), North Ebudes (VC104), North Hampshire (VC12), North Lincolnshire (VC54), North Somerset (VC6), North Wiltshire (VC7),
North-west Yorkshire (VC65), South Wiltshire (VC8), South-east Yorkshire (VC61), South-west Yorkshire (VC63), Surrey (VC17), Warwickshire (VC38), West Ross, West Sussex (VC13), West Sutherland
and Worcestershire (VC37) (NBN
recorded in the Republic of Ireland (van Achterberg in Fauna Europaea).
NBN Grid Map:
elsewhere: Widespread in continental Europe including Austria,
Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Latvia, Macedonia,
Poland, Romania, Slovakia, Spanish mainland, Sweden, Switzerland,
The Netherlands and Ukraine (van Achterberg in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: