miner: Oviposition in the very leaf tip. From there a very deep upper surface
blotch extends downwards. The blotch, that is very transparent,
can occupy a large part of the leaf. Mostly the entire width of
the leaf is mined out, but the broad leaves of the Goat Willow are
mined at one side of the midrib only. Pupation within the mine in
a large, transparent, discoidal cocoon (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 has short legs (British
leafminers). The larva is also illustrated in Bladmineerders van Europa.
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
In the mine in a large transparent cocoon (British
The adult is illustrated in ECatSym - Electronic World Catalog of Symphyta.
Hosts in Great Britain & Ireland:
of year - larvae: Summer and Autumn (British
of year - adults: Currently unknown.
Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.
in Great Britain & Ireland: Widespread in Britain including
Bedfordshire (VC30), Buckinghamshire (VC24), Cambridgeshire (VC29), Denbighshire (VC50), Derbyshire (VC57),
Dorset (VC9), Montgomeryshire (VC47), North Wiltshire (VC7), South Wiltshire (VC8), South-west Yorkshire (VC63), Surrey and West Cornwall (NBN
recorded in the Republic of Ireland (van Achterberg in Fauna Europaea).
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elsewhere: Widespread in continental Europe including Albania,
Austria, Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Hungary, Italian mainland, Latvia,
Norwegian mainland, Poland, Romania, Russia - Central, Slovakia,
Sweden, 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: