alni (Linnaeus, 1758)
[Coleoptera : Curculionidae]
alni Linnaeus, 1758.
saltatoralni De Geer, 1775.
Curculio saltator Geoffroy, 1785
inquinatus Panzer, 1797.
Curculio atricapillus Marsham, 1802.
Curculio ferrugineus Marsham, 1802.
Rhynchaenus pilosus Gyllenhal, 1813.
Rhynchaenus alni (Linnaeus, 1758).
Orchestes alni (Linnaeus, 1758).
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
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 & Ireland:
of year - larvae: Early Summer (June) (British
of year - adults: June (British
in Great Britain & Ireland: Widespread in Britain including
Bedfordshire (VC30), Berkshire (VC22), Buckinghamshire (VC24), Cambridgeshire (VC29), East Gloucestershire (VC33),
East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), Glamorganshire (VC41), Herefordshire (VC36), Hertfordshire (VC20), Isle of Wight (VC10), Leicestershire (VC55), Middlesex (VC21), Monmouthshire (VC35),
North Lincolnshire (VC54), Northamptonshire (VC32), Shropshire (VC40), South Devon (VC3), South Essex (VC18), South Hampshire (VC11), South Lincolnshire (VC53), South Wiltshire (VC8), Staffordshire (VC39),
Surrey (VC17), Warwickshire (VC38), West Cornwall (VC1), West Gloucestershire (VC34), West Kent (VC16), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
recorded in the Republic of Ireland (Alonso-Zarazaga in Fauna Europaea) and in Ireland (InvertebrateIreland Online).
NBN Grid Map:
elsewhere: Widespread in continental Europe including Bulgaria,
Corsica, French mainland, Germany, Italian mainland, Moldova, Poland,
Sardinia, Sicily, Slovakia and Yugoslavia (Alonso-Zarazaga in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.