Leaf
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).
The
mine is also illustrated in British
leafminers.
Larva:
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.
Pupa:
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
Adult:
Details unknown.
Hosts in Great Britain and Ireland:
The record on Castanea (British
leafminers) requires confirmation.
Hosts
elsewhere:
The record on Castanea (Bladmineerders van Europa) requires confirmation.
Time
of year - larvae: Univoltine: summer (British
leafminers).
Time
of year - adults: Currently unknown.
Comments:
Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.
Distribution
in Great Britain and Ireland: Widespread (British
leafminers) including Bedfordshire, Derbyshire, Dorset, East Cornwall, East Ross, East Sutherland, Hertfordshire, Huntingdonshire,
Mid-west Yorkshire, Middlesex, Monmouthshire, North Ebudes, North Hampshire, North Lincolnshire, North Somerset, North Wiltshire,
North-west Yorkshire, South Wiltshire, South-east Yorkshire, South-west Yorkshire, Surrey, Warwickshire, West Ross, West Sussex, West Sutherland
and Worcestershire (NBN
Atlas).
Also
recorded in the Republic of Ireland (Fauna Europaea).
Distribution
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 (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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