Tachyerges
stigma (Germar, 1821) [Coleoptera : Curculionidae].
Salius
stigma Germar, 1821
Orchestes alboscutellatus Dejean,
1821
Orchestes confundatus Schoenherr,
1835
Curculio jota Paykull, 1800
Tachyerges rufitarsis Stephens, 1831
Tachyerges stigma (Germar, 1821).
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Leaf-miner:
Oviposition in the base of the midrib, without giving rise to an
oviposition scar. The larva initially bores inside the midrib. Later
it leaves the midrib, forming a broad corridor in the blade, that
widens into a blotch. Finally the legless larva pupates in a globular
cocoon inside the mine. Because the mine develops at a time that
the leaf is fully developed, mined leaves are not disfigured (Bladmineerders van Europa).
Larva: The larvae of beetles have a head capsule and chewing mouthparts with opposable mandibles and lack abdominal legs.
Pupa: The pupae of beetles have visible head appendages, wings and legs which lie in sheaths (see examples).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae:
May and August (Hering, 1957),
June-August (Bladmineerders van Europa).
Time
of year - adults: Unknown.
Distribution
in Great Britain and Ireland: Widespred in Britain including
Anglesey, Berkshire, Cambridgeshire, Cardiganshire, Cheshire, Cumberland,
Denbighshire, Dorset, Dumfriesshire, East Kent,
East Norfolk, East Ross, East Suffolk, East Sussex, Glamorgan, Leicestershire,
Monmouthshire, North Hampshire, North Lincolnshire, Northamptonshire,
Pembrokeshire, Shropshire, South Hampshire, South Lancashire, South Wiltshire, Stafford, Surrey, Warwickshire, West Gloucestershire,
West Kent, West Lancashire, West Suffolk, West Sussex,
Westerness, Westmorland and Worcestershire (NBN
Atlas).
Also recorded in Ireland (InvertebrateIreland Online).
Distribution
elsewhere: Widespread in continental Europe including Bulgaria,
? Corsica, French mainland, Germany, Hungary, Italian mainland,
Moldova, Poland, Romania, Russia - Central, East, Northwest and
South, Slovakia and Yugoslavia. Also recorded in the East Palaearctic
(Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.
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