Leaf
miner: A large, practically full depth blotch without an apparent initial
corridor, starting in the centre of a leaf. The full grown larva
makes a circular cocoon, attached to upper epidermis. Before that
a circular cut has been made in the upper epidermis. The completed
cocoon falls out of the mine together with the disk of upper epidermis
(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 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:
Hosts
elsewhere:
Time
of year - larvae: Currently unknown.
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: Currently unknown.
Distribution
elsewhere: Continental Europe including Austria, Germany, Hungary
and Switzerland (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
Currently unknown.
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