Orchestes
alni (Linnaeus, 1758) [Coleoptera : Curculionidae]
Curculio
alni Linnaeus, 1758.
Curculio
saltatoralni De Geer, 1775.
Curculio saltator Geoffroy, 1785
Curculio
inquinatus Panzer, 1797.
Curculio atricapillus Marsham, 1802.
Curculio ferrugineus Marsham, 1802.
Rhynchaenus pilosus Gyllenhal, 1813.
Rhynchaenus alni (Linnaeus, 1758).
Orchestes alni (Linnaeus, 1758).
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Leaf-miner: Oviposition in the underside of the midrib; here an extensive scar
remains visible. From this point a full depth corridor runs towards
the leaf tip, where it widens to a blotch. The legless larva eventually
pupates in a globular cocoon, made inside the mine. Because the
mine is made at a time the leaf still is unfolding, the leaf can
be strongly disfigured (Bladmineerders van Europa).
A blotch is formed at the leaf tip from an initial corridor, which runs from the midrib (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 is illustrated in Bladmineerders van Europa.
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
The pupa is illustrated in Bladmineerders van Europa.
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae: Early Summer (June) (British
leafminers).
Time
of year - adults: June (British
leafminers).
Distribution
in Great Britain and Ireland: Widespread in Britain including
Bedfordshire, Berkshire, Cambridgeshire, Cheshire, Dorset, East Gloucestershire,
East Kent, East Norfolk, East Suffolk, Glamorgan, Herefordshire, Hertfordshire, Isle of Wight, Leicestershire, Middlesex, Monmouthshire,
North Devon, North Essex, Northamptonshire, Shropshire, South Devon, South Essex, South Wiltshire, Stafford,
Surrey, West Cornwall, West Gloucestershire, West Kent, West Norfolk, West Suffolk and Worcestershire (NBN
Atlas).
Also
recorded in the Republic of Ireland (Fauna Europaea) and in Ireland (InvertebrateIreland Online).
Distribution
elsewhere: Widespread in continental Europe including Bulgaria,
Corsica, French mainland, Germany, Italian mainland, Moldova, Poland,
Sardinia, Sicily, Slovakia and Yugoslavia (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.
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