Leaf-miner: A large, full depth transparent light brown blotch that expands
irrespective of the leaf venation. Mine mostly in the distal half
of the leaf, may eventually occupy half of its surface. The mine
often tears in, and the leaf tip is disfigured (Bladmineerders van Europa).
Forms a blotch mine at a leaf tip and can distort the leaf. The mine may occupy half the leaf (British
leafminers).
Larva: The larvae of beetles have a head capsule and chewing mouthparts with opposable mandibles and lack abdominal legs (see examples).
The larva eventually pupates in a globular cocoon within the mine
(Bladmineerders van Europa).
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
Adult:
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae:
May-June and August (Hering,
1957).
Time
of year - adults: April and July-August (Augustin, 1998a).
However, Scherf (1964a) states that there is but one generation
per year (Bladmineerders van Europa).
Distribution
in Great Britain and Ireland: East Kent, North Hampshire and West Suffolk
(NBN
Atlas).
Distribution
elsewhere: Widespread in continental Europe including Bulgaria,
? Corsica, French mainland, Germany, Italian mainland, Moldova,
Poland, Romania, Russia - East, Slovakia and Yugoslavia (Fauna Europaea).
NBN Atlas links to known host species:
Populus
nigra, Salix
fragilis, Salix
pentandra, Salix
pupurea, Salix
triandra
British and Irish Parasitoids in Britain and elsewhere: Currently unknown. |