Leaf
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).
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 has short legs (British
leafminers). The larva is also illustrated in Bladmineerders van Europa.
Pupa:
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
In the mine in a large transparent cocoon (British
leafminers).
Adult:
The adult is illustrated in ECatSym - Electronic World Catalog of Symphyta.
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae: Summer and Autumn (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 in Britain including
Bedfordshire, Buckinghamshire, Cambridgeshire, Denbighshire, Derbyshire,
Dorset, Montgomeryshire, North Wiltshire, South Wiltshire, South-west Yorkshire, Surrey and West Cornwall (NBN
Atlas).
Also
recorded in the Republic of Ireland (Fauna Europaea).
Distribution
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 (Fauna Europaea).
NBN Atlas links to known host species:
Salix
alba, Salix
aurita, Salix
caprea, Salix
cinerea, Salix
fragilis, Salix
myrsinifolia, Salix
pentandra, Salix
phylicifolia, Salix
purpurea, Salix
repens, Salix
triandra, Salix
viminalis, Salix
x sepulcralis |
British and Irish Parasitoids in Britain and elsewhere:
|