avellanae (Donovan, 1797)
[Coleoptera : Curculionidae]
Curculio hortorum Fabricius, 1792
Curculio salicis Fabricius, 1775
Rynchaenus scapularis Beck, 1817
Orchestes signifer Creutzer, 1799
Orchestes x-album Stephens, 1831
avellanae (Donovan, 1797)
Orchestes avellanae (Donovan, 1797)
Comment: The senior name is Orchestes hortorum (Fabricius, 1792) and will be included as such in the next Coleoptera Checklist (2016) (pers.comm Colin Plant ex Andrew Duff).
A gallery along the edge of the leaf leading to a circular blotch,
from which a case is cut leaving a round hole (British
leafminers, as O. signifer).
Rather short corridor along the leaf margin, widening into a circular blotch that usually is free from the margin. The mature larva makes an excision that includes almost all of the blotch, and thus sandwidched drops to the ground for pupation (Bladmineerders van Europa).
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 (British
leafminers, as O. signifer) and Bladmineerders van Europa.
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
Hosts in Great Britain & Ireland:
of year - mines: Univoltine: early summer (British
leafminers, as Orchestes signifer).
of year - adults: Currently unknown.
in Britain: Widespread including Bedfordshire (VC30), Berkshire (VC22), Buckinghamshire (VC24), Cumberland (VC70),
Derbyshire (VC(57), Dorset (VC9), Dunbartonshire (VC99), East Cornwall (VC2), East Gloucester (VC33), East Kent (VC15),
Herefordshire (VC36), Kirkcudbrightshire (VC73), Mid-west Yorkshire (VC64), Middlesex (VC21), North Essex (VC19), North Somerset (VC6), Northamptonshire (VC32), Nottinghamshire (VC56), South Hampshire (VC11), South Wiltshire (VC8), Staffordshire (VC39),
Stirlingshire (VC86), Surrey (VC17), Warwickshire (VC38), West Gloucestershire (VC34), West Kent (VC16), West Norfolk (VC28),
West Sussex (VC13) and Worcestershire (NBN
Gateway, as Rynchaenus
NBN Grid Map:
Orchestes avellanae, as Orchestes signifer
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elsewhere: Europe including Bulgaria, ? Corsica, Czech Republic,
Danish mainland, French mainland, Germany, Italian mainland, Moldova,
Norwegian mainland, Poland, Russia - East and Northwest, Sardinia,
Sicily, Slovakia, Switzerland Yugoslavia. Also recorded in the Near
East (Alonso-Zarazaga in Fauna Europaea).
NBN Interactive Grid Maps of known host species: